23256742 has 4 divisors (see below), whose sum is σ = 34885116. Its totient is φ = 11628370.

The previous prime is 23256713. The next prime is 23256743. The reversal of 23256742 is 24765232.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23256743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5814184 + ... + 5814187.

It is an arithmetic number, because the mean of its divisors is an integer number (8721279).

Almost surely, 2^23256742 is an apocalyptic number.

23256742 is a deficient number, since it is larger than the sum of its proper divisors (11628374).

23256742 is a wasteful number, since it uses less digits than its factorization.

23256742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11628373.

The product of its digits is 20160, while the sum is 31.

The square root of 23256742 is about 4822.5244426545. The cubic root of 23256742 is about 285.4409589165.

The spelling of 23256742 in words is "twenty-three million, two hundred fifty-six thousand, seven hundred forty-two".