23157464 has 48 divisors (see below), whose sum is σ = 48837600. Its totient is φ = 10281920.

The previous prime is 23157443. The next prime is 23157467. The reversal of 23157464 is 46475132.

It is a super-2 number, since 2×23157464² = 1072536277822592, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 23157464.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23157467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 45242 + ... + 45750.

It is an arithmetic number, because the mean of its divisors is an integer number (1017450).

Almost surely, 2^23157464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23157464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24418800).

23157464 is an abundant number, since it is smaller than the sum of its proper divisors (25680136).

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

23157464 is a wasteful number, since it uses less digits than its factorization.

23157464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 584 (or 569 counting only the distinct ones).

The product of its digits is 20160, while the sum is 32.

The square root of 23157464 is about 4812.2202775850. The cubic root of 23157464 is about 285.0342177034.

It can be divided in two parts, 2315 and 7464, that added together give a palindrome (9779).

The spelling of 23157464 in words is "twenty-three million, one hundred fifty-seven thousand, four hundred sixty-four".