28365408 has 36 divisors (see below), whose sum is σ = 80664948. Its totient is φ = 9455040.

The previous prime is 28365361. The next prime is 28365409. The reversal of 28365408 is 80456382.

It is a tau number, because it is divible by the number of its divisors (36).

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28365409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 48958 + ... + 49533.

It is an arithmetic number, because the mean of its divisors is an integer number (2240693).

Almost surely, 2^28365408 is an apocalyptic number.

It is an amenable number.

28365408 is an abundant number, since it is smaller than the sum of its proper divisors (52299540).

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

28365408 is a wasteful number, since it uses less digits than its factorization.

28365408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98507 (or 98496 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 36.

The square root of 28365408 is about 5325.9185123319. The cubic root of 28365408 is about 304.9741373752.

The spelling of 28365408 in words is "twenty-eight million, three hundred sixty-five thousand, four hundred eight".