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30494985192 = 2333797120771
BaseRepresentation
bin11100011001101001…
…001000101111101000
32220201020200202102000
4130121221020233220
5444423204011232
622001553211000
72126460045240
oct343151105750
986636622360
1030494985192
1111a29695801
125ab0860a60
132b4cab2749
141694096b20
15bd730127c
hex719a48be8

30494985192 has 128 divisors (see below), whose sum is σ = 96913843200. Its totient is φ = 8703460800.

The previous prime is 30494985121. The next prime is 30494985217. The reversal of 30494985192 is 29158949403.

30494985192 is a `hidden beast` number, since 30 + 4 + 9 + 4 + 98 + 519 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1457767 + ... + 1478537.

It is an arithmetic number, because the mean of its divisors is an integer number (757139400).

Almost surely, 230494985192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30494985192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48456921600).

30494985192 is an abundant number, since it is smaller than the sum of its proper divisors (66418858008).

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

30494985192 is a wasteful number, since it uses less digits than its factorization.

30494985192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21764 (or 21754 counting only the distinct ones).

The product of its (nonzero) digits is 2799360, while the sum is 54.

The spelling of 30494985192 in words is "thirty billion, four hundred ninety-four million, nine hundred eighty-five thousand, one hundred ninety-two".

Divisors: 1 2 3 4 6 7 8 9 12 14 18 21 24 27 28 36 42 54 56 63 72 84 108 126 168 189 216 252 378 504 756 971 1512 1942 2913 3884 5826 6797 7768 8739 11652 13594 17478 20391 20771 23304 26217 27188 34956 40782 41542 52434 54376 61173 62313 69912 81564 83084 104868 122346 124626 145397 163128 166168 183519 186939 209736 244692 249252 290794 367038 373878 436191 489384 498504 560817 581588 734076 747756 872382 1121634 1163176 1308573 1468152 1495512 1744764 2243268 2617146 3489528 3925719 4486536 5234292 7851438 10468584 15702876 20168641 31405752 40337282 60505923 80674564 121011846 141180487 161349128 181517769 242023692 282360974 363035538 423541461 484047384 544553307 564721948 726071076 847082922 1089106614 1129443896 1270624383 1452142152 1694165844 2178213228 2541248766 3388331688 3811873149 4356426456 5082497532 7623746298 10164995064 15247492596 30494985192