23772865 has 8 divisors (see below), whose sum is σ = 28574568. Its totient is φ = 18986880.

The previous prime is 23772863. The next prime is 23772871. The reversal of 23772865 is 56827732.

It can be written as a sum of positive squares in 4 ways, for example, as 1048576 + 22724289 = 1024^2 + 4767^2 .

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

It is not a de Polignac number, because 23772865 - 2¹ = 23772863 is a prime.

It is a super-2 number, since 2×23772865² = 1130298220616450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23772863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 292 + ... + 6901.

It is an arithmetic number, because the mean of its divisors is an integer number (3571821).

Almost surely, 2^23772865 is an apocalyptic number.

It is an amenable number.

23772865 is a deficient number, since it is larger than the sum of its proper divisors (4801703).

23772865 is an equidigital number, since it uses as much as digits as its factorization.

23772865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7859.

The product of its digits is 141120, while the sum is 40.

The square root of 23772865 is about 4875.7425075572. The cubic root of 23772865 is about 287.5370689443.

The spelling of 23772865 in words is "twenty-three million, seven hundred seventy-two thousand, eight hundred sixty-five".