23856560 has 160 divisors (see below), whose sum is σ = 71245440. Its totient is φ = 7225344.

The previous prime is 23856557. The next prime is 23856563. The reversal of 23856560 is 6565832.

It is an interprime number because it is at equal distance from previous prime (23856557) and next prime (23856563).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 23856560.

It is not an unprimeable number, because it can be changed into a prime (23856563) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 211064 + ... + 211176.

It is an arithmetic number, because the mean of its divisors is an integer number (445284).

Almost surely, 2^23856560 is an apocalyptic number.

23856560 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 23856560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35622720).

23856560 is an abundant number, since it is smaller than the sum of its proper divisors (47388880).

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

23856560 is a wasteful number, since it uses less digits than its factorization.

23856560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 169 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 35.

The square root of 23856560 is about 4884.3177619807. The cubic root of 23856560 is about 287.8741090731.

The spelling of 23856560 in words is "twenty-three million, eight hundred fifty-six thousand, five hundred sixty".