28437812080 has 20 divisors (see below), whose sum is σ = 66117913272. Its totient is φ = 11375124800.

The previous prime is 28437812033. The next prime is 28437812111. The reversal of 28437812080 is 8021873482.

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

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 177736246 + ... + 177736405.

Almost surely, 2^28437812080 is an apocalyptic number.

28437812080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28437812080 is an abundant number, since it is smaller than the sum of its proper divisors (37680101192).

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

28437812080 is a wasteful number, since it uses less digits than its factorization.

28437812080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355472664 (or 355472658 counting only the distinct ones).

The product of its (nonzero) digits is 172032, while the sum is 43.

The spelling of 28437812080 in words is "twenty-eight billion, four hundred thirty-seven million, eight hundred twelve thousand, eighty".