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90345430080 = 263453485549
BaseRepresentation
bin101010000100100000…
…0011101110001000000
322122012022212101010000
41110021000131301000
52440011412230310
6105300520040000
76345562325223
oct1241100356100
9278168771100
1090345430080
11353517048a4
1215614603000
13869a568389
144530b395ba
15253b8614c0
hex150901dc40

90345430080 has 140 divisors (see below), whose sum is σ = 321374681100. Its totient is φ = 24092107776.

The previous prime is 90345430079. The next prime is 90345430099. The reversal of 90345430080 is 8003454309.

90345430080 is a `hidden beast` number, since 9 + 0 + 34 + 543 + 0 + 0 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23123460096 + 67221969984 = 152064^2 + 259272^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 1716855 + ... + 1768694.

Almost surely, 290345430080 is an apocalyptic number.

90345430080 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

90345430080 is an abundant number, since it is smaller than the sum of its proper divisors (231029251020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90345430080 is a wasteful number, since it uses less digits than its factorization.

90345430080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3485578 (or 3485559 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

Adding to 90345430080 its reverse (8003454309), we get a palindrome (98348884389).

The spelling of 90345430080 in words is "ninety billion, three hundred forty-five million, four hundred thirty thousand, eighty".

Divisors: 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 27 30 32 36 40 45 48 54 60 64 72 80 81 90 96 108 120 135 144 160 162 180 192 216 240 270 288 320 324 360 405 432 480 540 576 648 720 810 864 960 1080 1296 1440 1620 1728 2160 2592 2880 3240 4320 5184 6480 8640 12960 25920 3485549 6971098 10456647 13942196 17427745 20913294 27884392 31369941 34855490 41826588 52283235 55768784 62739882 69710980 83653176 94109823 104566470 111537568 125479764 139421960 156849705 167306352 188219646 209132940 223075136 250959528 278843920 282329469 313699410 334612704 376439292 418265880 470549115 501919056 557687840 564658938 627398820 669225408 752878584 836531760 941098230 1003838112 1115375680 1129317876 1254797640 1411647345 1505757168 1673063520 1882196460 2007676224 2258635752 2509595280 2823294690 3011514336 3346127040 3764392920 4517271504 5019190560 5646589380 6023028672 7528785840 9034543008 10038381120 11293178760 15057571680 18069086016 22586357520 30115143360 45172715040 90345430080