23520728 has 32 divisors (see below), whose sum is σ = 54984960. Its totient is φ = 9163680.

The previous prime is 23520719. The next prime is 23520733. The reversal of 23520728 is 82702532.

It is a self number, because there is not a number n which added to its sum of digits gives 23520728.

It is a congruent number.

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, 18476 + ... + 19707.

It is an arithmetic number, because the mean of its divisors is an integer number (1718280).

Almost surely, 2^23520728 is an apocalyptic number.

23520728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23520728 is an abundant number, since it is smaller than the sum of its proper divisors (31464232).

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

23520728 is a wasteful number, since it uses less digits than its factorization.

23520728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38207 (or 38203 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 23520728 is about 4849.8173161471. The cubic root of 23520728 is about 286.5169063321.

The spelling of 23520728 in words is "twenty-three million, five hundred twenty thousand, seven hundred twenty-eight".