23120538 has 16 divisors (see below), whose sum is σ = 52847040. Its totient is φ = 6605856.

The previous prime is 23120501. The next prime is 23120551. The reversal of 23120538 is 83502132.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 275203 + ... + 275286.

It is an arithmetic number, because the mean of its divisors is an integer number (3302940).

Almost surely, 2^23120538 is an apocalyptic number.

23120538 is an abundant number, since it is smaller than the sum of its proper divisors (29726502).

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

23120538 is a wasteful number, since it uses less digits than its factorization.

23120538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550501.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 23120538 is about 4808.3820563678. The cubic root of 23120538 is about 284.8826355781.

The spelling of 23120538 in words is "twenty-three million, one hundred twenty thousand, five hundred thirty-eight".