23765538 has 16 divisors (see below), whose sum is σ = 47743200. Its totient is φ = 7886496.

The previous prime is 23765537. The next prime is 23765543. The reversal of 23765538 is 83556732.

It is a junction number, because it is equal to n+sod(n) for n = 23765496 and 23765505.

It is not an unprimeable number, because it can be changed into a prime (23765531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7363 + ... + 10086.

It is an arithmetic number, because the mean of its divisors is an integer number (2983950).

Almost surely, 2^23765538 is an apocalyptic number.

23765538 is an abundant number, since it is smaller than the sum of its proper divisors (23977662).

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

23765538 is a wasteful number, since it uses less digits than its factorization.

23765538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17681.

The product of its digits is 151200, while the sum is 39.

The square root of 23765538 is about 4874.9910769149. The cubic root of 23765538 is about 287.5075254489.

The spelling of 23765538 in words is "twenty-three million, seven hundred sixty-five thousand, five hundred thirty-eight".