23157480 has 32 divisors (see below), whose sum is σ = 69472800. Its totient is φ = 6175296.

The previous prime is 23157479. The next prime is 23157487. The reversal of 23157480 is 8475132.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (23157487) 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, 96370 + ... + 96609.

It is an arithmetic number, because the mean of its divisors is an integer number (2171025).

Almost surely, 2^23157480 is an apocalyptic number.

23157480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23157480 is an abundant number, since it is smaller than the sum of its proper divisors (46315320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23157480 is a wasteful number, since it uses less digits than its factorization.

23157480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192993 (or 192989 counting only the distinct ones).

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

The square root of 23157480 is about 4812.2219400190. The cubic root of 23157480 is about 285.0342833489.

The spelling of 23157480 in words is "twenty-three million, one hundred fifty-seven thousand, four hundred eighty".