23124720 has 40 divisors (see below), whose sum is σ = 71687376. Its totient is φ = 6166528.

The previous prime is 23124707. The next prime is 23124727. The reversal of 23124720 is 2742132.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23124727) 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, 47937 + ... + 48416.

Almost surely, 2^23124720 is an apocalyptic number.

23124720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23124720 is an abundant number, since it is smaller than the sum of its proper divisors (48562656).

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

23124720 is a wasteful number, since it uses less digits than its factorization.

23124720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96369 (or 96363 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 21.

The square root of 23124720 is about 4808.8169023160. The cubic root of 23124720 is about 284.8998108901.

Adding to 23124720 its reverse (2742132), we get a palindrome (25866852).

The spelling of 23124720 in words is "twenty-three million, one hundred twenty-four thousand, seven hundred twenty".