23065560 has 224 divisors, whose sum is σ = 89713440. Its totient is φ = 5225472.

The previous prime is 23065543. The next prime is 23065589. The reversal of 23065560 is 6556032.

23065560 is a `hidden beast` number, since 2 + 3 + 0 + 655 + 6 + 0 = 666.

It is a super-2 number, since 2×23065560² = 1064040116227200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 55 ways as a sum of consecutive naturals, for example, 204064 + ... + 204176.

Almost surely, 2^23065560 is an apocalyptic number.

23065560 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 23065560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44856720).

23065560 is an abundant number, since it is smaller than the sum of its proper divisors (66647880).

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

23065560 is a wasteful number, since it uses less digits than its factorization.

23065560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149 (or 130 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 23065560 is about 4802.6617619816. The cubic root of 23065560 is about 284.6566502322.

The spelling of 23065560 in words is "twenty-three million, sixty-five thousand, five hundred sixty".