23340728 has 32 divisors (see below), whose sum is σ = 46992960. Its totient is φ = 10828800.

The previous prime is 23340697. The next prime is 23340739. The reversal of 23340728 is 82704332.

It is a self number, because there is not a number n which added to its sum of digits gives 23340728.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8753 + ... + 11103.

It is an arithmetic number, because the mean of its divisors is an integer number (1468530).

Almost surely, 2^23340728 is an apocalyptic number.

It is an amenable number.

23340728 is an abundant number, since it is smaller than the sum of its proper divisors (23652232).

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

23340728 is a wasteful number, since it uses less digits than its factorization.

23340728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2447 (or 2443 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 23340728 is about 4831.2242754813. The cubic root of 23340728 is about 285.7841460598.

The spelling of 23340728 in words is "twenty-three million, three hundred forty thousand, seven hundred twenty-eight".