23752281 has 16 divisors (see below), whose sum is σ = 38323584. Its totient is φ = 12774144.

The previous prime is 23752277. The next prime is 23752291. The reversal of 23752281 is 18225732.

It is not a de Polignac number, because 23752281 - 2² = 23752277 is a prime.

It is a super-2 number, since 2×23752281² = 1128341705405922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23752291) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32910 + ... + 33623.

It is an arithmetic number, because the mean of its divisors is an integer number (2395224).

Almost surely, 2^23752281 is an apocalyptic number.

23752281 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

23752281 is a deficient number, since it is larger than the sum of its proper divisors (14571303).

23752281 is a wasteful number, since it uses less digits than its factorization.

23752281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66560.

The product of its digits is 6720, while the sum is 30.

The square root of 23752281 is about 4873.6311924478. The cubic root of 23752281 is about 287.4540559223.

It can be divided in two parts, 2375 and 2281, that added together give a triangular number (4656 = T₉₆).

The spelling of 23752281 in words is "twenty-three million, seven hundred fifty-two thousand, two hundred eighty-one".