23310728 has 16 divisors (see below), whose sum is σ = 49951680. Its totient is φ = 9990288.

The previous prime is 23310719. The next prime is 23310737. The reversal of 23310728 is 82701332.

It is an interprime number because it is at equal distance from previous prime (23310719) and next prime (23310737).

It is a junction number, because it is equal to n+sod(n) for n = 23310697 and 23310706.

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 3 ways as a sum of consecutive naturals, for example, 208076 + ... + 208187.

It is an arithmetic number, because the mean of its divisors is an integer number (3121980).

Almost surely, 2^23310728 is an apocalyptic number.

23310728 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

23310728 is an abundant number, since it is smaller than the sum of its proper divisors (26640952).

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

23310728 is a wasteful number, since it uses less digits than its factorization.

23310728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 416276 (or 416272 counting only the distinct ones).

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

The square root of 23310728 is about 4828.1184741056. The cubic root of 23310728 is about 285.6616534479.

The spelling of 23310728 in words is "twenty-three million, three hundred ten thousand, seven hundred twenty-eight".