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23045880 = 233511131779
BaseRepresentation
bin101011111101…
…0011011111000
31121100212000010
41113322123320
521344432010
62141541520
7366613104
oct127723370
947325003
1023045880
1112010790
1278748a0
134a0b920
1430bc904
152053620
hex15fa6f8

23045880 has 256 divisors, whose sum is σ = 87091200. Its totient is φ = 4792320.

The previous prime is 23045837. The next prime is 23045899. The reversal of 23045880 is 8854032.

It is a super-2 number, since 2×230458802 = 1062225169948800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 291681 + ... + 291759.

It is an arithmetic number, because the mean of its divisors is an integer number (340200).

Almost surely, 223045880 is an apocalyptic number.

23045880 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 23045880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43545600).

23045880 is an abundant number, since it is smaller than the sum of its proper divisors (64045320).

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

23045880 is a wasteful number, since it uses less digits than its factorization.

23045880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 23045880 is about 4800.6124609262. The cubic root of 23045880 is about 284.5756689352.

The spelling of 23045880 in words is "twenty-three million, forty-five thousand, eight hundred eighty".