28164778300 has 72 divisors (see below), whose sum is σ = 61607324240. Its totient is φ = 11176012800.

The previous prime is 28164778273. The next prime is 28164778319. The reversal of 28164778300 is 387746182.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6673591 + ... + 6677809.

Almost surely, 2^28164778300 is an apocalyptic number.

28164778300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28164778300 is an abundant number, since it is smaller than the sum of its proper divisors (33442545940).

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

28164778300 is a wasteful number, since it uses less digits than its factorization.

28164778300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4751 (or 4744 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 46.

The spelling of 28164778300 in words is "twenty-eight billion, one hundred sixty-four million, seven hundred seventy-eight thousand, three hundred".