23355864 has 160 divisors (see below), whose sum is σ = 78988800. Its totient is φ = 6298560.

The previous prime is 23355779. The next prime is 23355869. The reversal of 23355864 is 46855332.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23355869) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 86049 + ... + 86319.

It is an arithmetic number, because the mean of its divisors is an integer number (493680).

Almost surely, 2^23355864 is an apocalyptic number.

23355864 is a gapful number since it is divisible by the number (24) 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 23355864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39494400).

23355864 is an abundant number, since it is smaller than the sum of its proper divisors (55632936).

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

23355864 is a wasteful number, since it uses less digits than its factorization.

23355864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 315 (or 302 counting only the distinct ones).

The product of its digits is 86400, while the sum is 36.

The square root of 23355864 is about 4832.7904982525. The cubic root of 23355864 is about 285.8459078315.

The spelling of 23355864 in words is "twenty-three million, three hundred fifty-five thousand, eight hundred sixty-four".