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22431600980 = 2251765975297
BaseRepresentation
bin10100111001000001…
…110001000101010100
32010220022000101201022
4110321001301011110
5331414442212410
614145511020312
71422606314405
oct247101610524
963808011638
1022431600980
119571065908
12442036a698
1321663a9199
14112b20d9ac
158b4485455
hex539071154

22431600980 has 24 divisors (see below), whose sum is σ = 49877325288. Its totient is φ = 8444837888.

The previous prime is 22431600973. The next prime is 22431600991. The reversal of 22431600980 is 8900613422.

It can be written as a sum of positive squares in 4 ways, for example, as 203176516 + 22228424464 = 14254^2 + 149092^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 22431600980.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32987309 + ... + 32987988.

It is an arithmetic number, because the mean of its divisors is an integer number (2078221887).

Almost surely, 222431600980 is an apocalyptic number.

22431600980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22431600980 is an abundant number, since it is smaller than the sum of its proper divisors (27445724308).

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

22431600980 is a wasteful number, since it uses less digits than its factorization.

22431600980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65975323 (or 65975321 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The spelling of 22431600980 in words is "twenty-two billion, four hundred thirty-one million, six hundred thousand, nine hundred eighty".

Divisors: 1 2 4 5 10 17 20 34 68 85 170 340 65975297 131950594 263901188 329876485 659752970 1121580049 1319505940 2243160098 4486320196 5607900245 11215800490 22431600980