23431878 has 48 divisors (see below), whose sum is σ = 52711776. Its totient is φ = 7516800.

The previous prime is 23431853. The next prime is 23431901. The reversal of 23431878 is 87813432.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 100450 + ... + 100682.

It is an arithmetic number, because the mean of its divisors is an integer number (1098162).

Almost surely, 2^23431878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23431878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26355888).

23431878 is an abundant number, since it is smaller than the sum of its proper divisors (29279898).

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

23431878 is a wasteful number, since it uses less digits than its factorization.

23431878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429 (or 426 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 23431878 is about 4840.6485102722. The cubic root of 23431878 is about 286.1556767339.

The spelling of 23431878 in words is "twenty-three million, four hundred thirty-one thousand, eight hundred seventy-eight".