23256947 has 4 divisors (see below), whose sum is σ = 26579376. Its totient is φ = 19934520.

The previous prime is 23256943. The next prime is 23256977. The reversal of 23256947 is 74965232.

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

It is a cyclic number.

It is not a de Polignac number, because 23256947 - 2² = 23256943 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23256947.

It is not an unprimeable number, because it can be changed into a prime (23256943) 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, 1661204 + ... + 1661217.

It is an arithmetic number, because the mean of its divisors is an integer number (6644844).

Almost surely, 2^23256947 is an apocalyptic number.

23256947 is a deficient number, since it is larger than the sum of its proper divisors (3322429).

23256947 is an equidigital number, since it uses as much as digits as its factorization.

23256947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3322428.

The product of its digits is 90720, while the sum is 38.

The square root of 23256947 is about 4822.5456970360. The cubic root of 23256947 is about 285.4417976013.

The spelling of 23256947 in words is "twenty-three million, two hundred fifty-six thousand, nine hundred forty-seven".