28909500480 has 224 divisors, whose sum is σ = 116556007680. Its totient is φ = 6607872000.

The previous prime is 28909500437. The next prime is 28909500491. The reversal of 28909500480 is 8400590982.

28909500480 is a `hidden beast` number, since 2 + 89 + 0 + 95 + 0 + 0 + 480 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 178521 + ... + 299480.

It is an arithmetic number, because the mean of its divisors is an integer number (520339320).

Almost surely, 2^28909500480 is an apocalyptic number.

28909500480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28909500480 is an abundant number, since it is smaller than the sum of its proper divisors (87646507200).

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

28909500480 is a wasteful number, since it uses less digits than its factorization.

28909500480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 478034 (or 478018 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 45.

The spelling of 28909500480 in words is "twenty-eight billion, nine hundred nine million, five hundred thousand, four hundred eighty".