23438858 has 4 divisors (see below), whose sum is σ = 35158290. Its totient is φ = 11719428.

The previous prime is 23438843. The next prime is 23438887. The reversal of 23438858 is 85883432.

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., 12061729 + 11377129 = 3473^2 + 3373^2 .

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 as a sum of consecutive naturals, namely, 5859713 + ... + 5859716.

Almost surely, 2^23438858 is an apocalyptic number.

23438858 is a deficient number, since it is larger than the sum of its proper divisors (11719432).

23438858 is a wasteful number, since it uses less digits than its factorization.

23438858 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11719431.

The product of its digits is 184320, while the sum is 41.

The square root of 23438858 is about 4841.3694343646. The cubic root of 23438858 is about 286.1840877207.

The spelling of 23438858 in words is "twenty-three million, four hundred thirty-eight thousand, eight hundred fifty-eight".