23670891 has 6 divisors (see below), whose sum is σ = 34191300. Its totient is φ = 15780588.

The previous prime is 23670883. The next prime is 23670893. The reversal of 23670891 is 19807632.

It is not a de Polignac number, because 23670891 - 2³ = 23670883 is a prime.

It is a super-2 number, since 2×23670891² = 1120622161467762, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23670893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1315041 + ... + 1315058.

It is an arithmetic number, because the mean of its divisors is an integer number (5698550).

Almost surely, 2^23670891 is an apocalyptic number.

23670891 is a deficient number, since it is larger than the sum of its proper divisors (10520409).

23670891 is a wasteful number, since it uses less digits than its factorization.

23670891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2630105 (or 2630102 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 23670891 is about 4865.2739902291. The cubic root of 23670891 is about 287.1253484110.

The spelling of 23670891 in words is "twenty-three million, six hundred seventy thousand, eight hundred ninety-one".