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90298452280 = 23519831431491
BaseRepresentation
bin101010000011000110…
…1010000100100111000
322122002001110122200111
41110012031100210320
52434412400433110
6105252121114104
76344452115551
oct1240615204470
9278061418614
1090298452280
1135328138773
1215600928934
1386908ca76a
1445287cb328
152537681e8a
hex1506350938

90298452280 has 64 divisors (see below), whose sum is σ = 216441590400. Its totient is φ = 33806067840.

The previous prime is 90298452229. The next prime is 90298452289. The reversal of 90298452280 is 8225489209.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90298452289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 652666 + ... + 778825.

It is an arithmetic number, because the mean of its divisors is an integer number (3381899850).

Almost surely, 290298452280 is an apocalyptic number.

It is an amenable number.

90298452280 is an abundant number, since it is smaller than the sum of its proper divisors (126143138120).

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

90298452280 is a wasteful number, since it uses less digits than its factorization.

90298452280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1431604 (or 1431600 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The spelling of 90298452280 in words is "ninety billion, two hundred ninety-eight million, four hundred fifty-two thousand, two hundred eighty".

Divisors: 1 2 4 5 8 10 19 20 38 40 76 83 95 152 166 190 332 380 415 664 760 830 1577 1660 3154 3320 6308 7885 12616 15770 31540 63080 1431491 2862982 5725964 7157455 11451928 14314910 27198329 28629820 54396658 57259640 108793316 118813753 135991645 217586632 237627506 271983290 475255012 543966580 594068765 950510024 1087933160 1188137530 2257461307 2376275060 4514922614 4752550120 9029845228 11287306535 18059690456 22574613070 45149226140 90298452280