28800396 has 18 divisors (see below), whose sum is σ = 72801092. Its totient is φ = 9600120.

The previous prime is 28800377. The next prime is 28800403. The reversal of 28800396 is 69300882.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 800011 = 28800396 / (2 + 8 + 8 + 0 + 0 + 3 + 9 + 6).

It is a self number, because there is not a number n which added to its sum of digits gives 28800396.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 399970 + ... + 400041.

Almost surely, 2^28800396 is an apocalyptic number.

It is an amenable number.

28800396 is an abundant number, since it is smaller than the sum of its proper divisors (44000696).

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

28800396 is a wasteful number, since it uses less digits than its factorization.

28800396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 800021 (or 800016 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 28800396 is about 5366.6000409943. The cubic root of 28800396 is about 306.5251778516.

The spelling of 28800396 in words is "twenty-eight million, eight hundred thousand, three hundred ninety-six".