23156426 has 4 divisors (see below), whose sum is σ = 34734642. Its totient is φ = 11578212.

The previous prime is 23156417. The next prime is 23156449. The reversal of 23156426 is 62465132.

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., 23030401 + 126025 = 4799^2 + 355^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5789105 + ... + 5789108.

Almost surely, 2^23156426 is an apocalyptic number.

23156426 is a deficient number, since it is larger than the sum of its proper divisors (11578216).

23156426 is a wasteful number, since it uses less digits than its factorization.

23156426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11578215.

The product of its digits is 8640, while the sum is 29.

The square root of 23156426 is about 4812.1124259518. The cubic root of 23156426 is about 285.0299588902.

The spelling of 23156426 in words is "twenty-three million, one hundred fifty-six thousand, four hundred twenty-six".