23139338 has 4 divisors (see below), whose sum is σ = 34709010. Its totient is φ = 11569668.

The previous prime is 23139307. The next prime is 23139367. The reversal of 23139338 is 83393132.

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., 22250089 + 889249 = 4717^2 + 943^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5784833 + ... + 5784836.

Almost surely, 2^23139338 is an apocalyptic number.

23139338 is a deficient number, since it is larger than the sum of its proper divisors (11569672).

23139338 is a wasteful number, since it uses less digits than its factorization.

23139338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11569671.

The product of its digits is 11664, while the sum is 32.

The square root of 23139338 is about 4810.3365786606. The cubic root of 23139338 is about 284.9598301854.

The spelling of 23139338 in words is "twenty-three million, one hundred thirty-nine thousand, three hundred thirty-eight".