23351538 has 24 divisors (see below), whose sum is σ = 54328752. Its totient is φ = 6671784.

The previous prime is 23351533. The next prime is 23351539. The reversal of 23351538 is 83515332.

It is not an unprimeable number, because it can be changed into a prime (23351533) 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 11 ways as a sum of consecutive naturals, for example, 39420 + ... + 40007.

It is an arithmetic number, because the mean of its divisors is an integer number (2263698).

Almost surely, 2^23351538 is an apocalyptic number.

23351538 is an abundant number, since it is smaller than the sum of its proper divisors (30977214).

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

23351538 is a wasteful number, since it uses less digits than its factorization.

23351538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79446 (or 79439 counting only the distinct ones).

The product of its digits is 10800, while the sum is 30.

The square root of 23351538 is about 4832.3429100179. The cubic root of 23351538 is about 285.8282585059.

It can be divided in two parts, 2 and 3351538, that multiplied together give a palindrome (6703076).

The spelling of 23351538 in words is "twenty-three million, three hundred fifty-one thousand, five hundred thirty-eight".