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23980769280 = 21534513139
BaseRepresentation
bin10110010101010111…
…011000000000000000
32021220021001022010000
4112111113120000000
5343103034104110
615003331040000
71506160114146
oct262527300000
967807038100
1023980769280
11a196578996
124793140000
132352325110
141236c71596
159554931c0
hex5955d8000

23980769280 has 640 divisors, whose sum is σ = 93253683600. Its totient is φ = 5860491264.

The previous prime is 23980769227. The next prime is 23980769299. The reversal of 23980769280 is 8296708932.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (640).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 172523451 + ... + 172523589.

Almost surely, 223980769280 is an apocalyptic number.

23980769280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23980769280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46626841800).

23980769280 is an abundant number, since it is smaller than the sum of its proper divisors (69272914320).

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

23980769280 is an equidigital number, since it uses as much as digits as its factorization.

23980769280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 162 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The spelling of 23980769280 in words is "twenty-three billion, nine hundred eighty million, seven hundred sixty-nine thousand, two hundred eighty".