28364080 has 20 divisors (see below), whose sum is σ = 65946672. Its totient is φ = 11345600.

The previous prime is 28364071. The next prime is 28364099. The reversal of 28364080 is 8046382.

28364080 = 339² + 340² + ... + 498².

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (20).

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, 177196 + ... + 177355.

Almost surely, 2^28364080 is an apocalyptic number.

28364080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28364080 is an abundant number, since it is smaller than the sum of its proper divisors (37582592).

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

28364080 is a wasteful number, since it uses less digits than its factorization.

28364080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354564 (or 354558 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28364080 is about 5325.7938375420. The cubic root of 28364080 is about 304.9693779164.

The spelling of 28364080 in words is "twenty-eight million, three hundred sixty-four thousand, eighty".