23183720 has 32 divisors (see below), whose sum is σ = 59616000. Its totient is φ = 7948608.

The previous prime is 23183711. The next prime is 23183759. The reversal of 23183720 is 2738132.

It is a self number, because there is not a number n which added to its sum of digits gives 23183720.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41120 + ... + 41679.

It is an arithmetic number, because the mean of its divisors is an integer number (1863000).

Almost surely, 2^23183720 is an apocalyptic number.

23183720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23183720 is an abundant number, since it is smaller than the sum of its proper divisors (36432280).

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

23183720 is a wasteful number, since it uses less digits than its factorization.

23183720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82817 (or 82813 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 23183720 is about 4814.9475594237. The cubic root of 23183720 is about 285.1419012246.

The spelling of 23183720 in words is "twenty-three million, one hundred eighty-three thousand, seven hundred twenty".