28874735280 has 160 divisors (see below), whose sum is σ = 105307992000. Its totient is φ = 7246983168.

The previous prime is 28874735237. The next prime is 28874735293. The reversal of 28874735280 is 8253747882.

28874735280 is a `hidden beast` number, since 288 + 7 + 4 + 7 + 352 + 8 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356455 + ... + 429894.

It is an arithmetic number, because the mean of its divisors is an integer number (658174950).

Almost surely, 2^28874735280 is an apocalyptic number.

28874735280 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28874735280 is an abundant number, since it is smaller than the sum of its proper divisors (76433256720).

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

28874735280 is a wasteful number, since it uses less digits than its factorization.

28874735280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786388 (or 786376 counting only the distinct ones).

The product of its (nonzero) digits is 6021120, while the sum is 54.

The spelling of 28874735280 in words is "twenty-eight billion, eight hundred seventy-four million, seven hundred thirty-five thousand, two hundred eighty".