23538442 has 4 divisors (see below), whose sum is σ = 35307666. Its totient is φ = 11769220.

The previous prime is 23538433. The next prime is 23538443. The reversal of 23538442 is 24483532.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 23532201 + 6241 = 4851^2 + 79^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (23538443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5884609 + ... + 5884612.

Almost surely, 2^23538442 is an apocalyptic number.

23538442 is a deficient number, since it is larger than the sum of its proper divisors (11769224).

23538442 is a wasteful number, since it uses less digits than its factorization.

23538442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11769223.

The product of its digits is 23040, while the sum is 31.

The square root of 23538442 is about 4851.6432267841. The cubic root of 23538442 is about 286.5888157686.

The spelling of 23538442 in words is "twenty-three million, five hundred thirty-eight thousand, four hundred forty-two".