23871136 has 12 divisors (see below), whose sum is σ = 46996362. Its totient is φ = 11935552.

The previous prime is 23871131. The next prime is 23871139. The reversal of 23871136 is 63117832.

It can be written as a sum of positive squares in only one way, i.e., 18835600 + 5035536 = 4340^2 + 2244^2 .

It is a super-2 number, since 2×23871136² = 1139662267860992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23871098 and 23871107.

It is not an unprimeable number, because it can be changed into a prime (23871131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 372955 + ... + 373018.

Almost surely, 2^23871136 is an apocalyptic number.

It is an amenable number.

23871136 is a deficient number, since it is larger than the sum of its proper divisors (23125226).

23871136 is an equidigital number, since it uses as much as digits as its factorization.

23871136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745983 (or 745975 counting only the distinct ones).

The product of its digits is 6048, while the sum is 31.

The square root of 23871136 is about 4885.8096565462. The cubic root of 23871136 is about 287.9327260562.

Adding to 23871136 its reverse (63117832), we get a palindrome (86988968).

The spelling of 23871136 in words is "twenty-three million, eight hundred seventy-one thousand, one hundred thirty-six".