23090728 has 16 divisors (see below), whose sum is σ = 44788500. Its totient is φ = 11147136.

The previous prime is 23090693. The next prime is 23090729. The reversal of 23090728 is 82709032.

It can be written as a sum of positive squares in 2 ways, for example, as 21548164 + 1542564 = 4642^2 + 1242^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 23090728.

It is not an unprimeable number, because it can be changed into a prime (23090729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49533 + ... + 49996.

Almost surely, 2^23090728 is an apocalyptic number.

It is an amenable number.

23090728 is a deficient number, since it is larger than the sum of its proper divisors (21697772).

23090728 is a wasteful number, since it uses less digits than its factorization.

23090728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99564 (or 99560 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 23090728 is about 4805.2812612791. The cubic root of 23090728 is about 284.7601470242.

The spelling of 23090728 in words is "twenty-three million, ninety thousand, seven hundred twenty-eight".