23151872 has 18 divisors (see below), whose sum is σ = 46213818. Its totient is φ = 11575808.

The previous prime is 23151857. The next prime is 23151883. The reversal of 23151872 is 27815132.

It can be written as a sum of positive squares in only one way, i.e., 16516096 + 6635776 = 4064^2 + 2576^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44963 + ... + 45474.

Almost surely, 2^23151872 is an apocalyptic number.

It is an amenable number.

23151872 is a deficient number, since it is larger than the sum of its proper divisors (23061946).

23151872 is an frugal number, since it uses more digits than its factorization.

23151872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90453 (or 90439 counting only the distinct ones).

The product of its digits is 3360, while the sum is 29.

The square root of 23151872 is about 4811.6392217206. The cubic root of 23151872 is about 285.0112727664.

The spelling of 23151872 in words is "twenty-three million, one hundred fifty-one thousand, eight hundred seventy-two".