23867856 has 30 divisors (see below), whose sum is σ = 66797250. Its totient is φ = 7955904.

The previous prime is 23867827. The next prime is 23867867. The reversal of 23867856 is 65876832.

It can be written as a sum of positive squares in only one way, i.e., 23853456 + 14400 = 4884^2 + 120^2 .

It is a congruent number.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 82731 + ... + 83018.

It is an arithmetic number, because the mean of its divisors is an integer number (2226575).

Almost surely, 2^23867856 is an apocalyptic number.

It is an amenable number.

23867856 is an abundant number, since it is smaller than the sum of its proper divisors (42929394).

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

23867856 is a wasteful number, since it uses less digits than its factorization.

23867856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165763 (or 165754 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 23867856 is about 4885.4739790526. The cubic root of 23867856 is about 287.9195377075.

The spelling of 23867856 in words is "twenty-three million, eight hundred sixty-seven thousand, eight hundred fifty-six".