23210906 has 4 divisors (see below), whose sum is σ = 34816362. Its totient is φ = 11605452.

The previous prime is 23210857. The next prime is 23210939. The reversal of 23210906 is 60901232.

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., 13256881 + 9954025 = 3641^2 + 3155^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5802725 + ... + 5802728.

Almost surely, 2^23210906 is an apocalyptic number.

23210906 is a deficient number, since it is larger than the sum of its proper divisors (11605456).

23210906 is a wasteful number, since it uses less digits than its factorization.

23210906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11605455.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 23210906 is about 4817.7698160041. The cubic root of 23210906 is about 285.2533133084.

The spelling of 23210906 in words is "twenty-three million, two hundred ten thousand, nine hundred six".