23091812 has 6 divisors (see below), whose sum is σ = 40410678. Its totient is φ = 11545904.

The previous prime is 23091791. The next prime is 23091857. The reversal of 23091812 is 21819032.

It can be written as a sum of positive squares in only one way, i.e., 12503296 + 10588516 = 3536^2 + 3254^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2886473 + ... + 2886480.

It is an arithmetic number, because the mean of its divisors is an integer number (6735113).

Almost surely, 2^23091812 is an apocalyptic number.

It is an amenable number.

23091812 is a deficient number, since it is larger than the sum of its proper divisors (17318866).

23091812 is a wasteful number, since it uses less digits than its factorization.

23091812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5772957 (or 5772955 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 23091812 is about 4805.3940525206. The cubic root of 23091812 is about 284.7646029999.

The spelling of 23091812 in words is "twenty-three million, ninety-one thousand, eight hundred twelve".