23402906 has 8 divisors (see below), whose sum is σ = 35499060. Its totient is φ = 11569888.

The previous prime is 23402903. The next prime is 23402947. The reversal of 23402906 is 60920432.

It can be written as a sum of positive squares in 2 ways, for example, as 22992025 + 410881 = 4795^2 + 641^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (23402903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65561 + ... + 65916.

Almost surely, 2^23402906 is an apocalyptic number.

23402906 is a deficient number, since it is larger than the sum of its proper divisors (12096154).

23402906 is a wasteful number, since it uses less digits than its factorization.

23402906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131568.

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 23402906 is about 4837.6550104364. The cubic root of 23402906 is about 286.0376904376.

The spelling of 23402906 in words is "twenty-three million, four hundred two thousand, nine hundred six".