28250214084 has 81 divisors (see below), whose sum is σ = 72352938567. Its totient is φ = 9294041088.

The previous prime is 28250214079. The next prime is 28250214101. The reversal of 28250214084 is 48041205282.

The square root of 28250214084 is 168078.

It is a perfect power (a square), and thus also a powerful number.

28250214084 is a `hidden beast` number, since 2 + 8 + 2 + 502 + 140 + 8 + 4 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 16309844100 + 11940369984 = 127710^2 + 109272^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 109922884 + ... + 109923140.

Almost surely, 2^28250214084 is an apocalyptic number.

28250214084 is the 168078-th square number.

It is an amenable number.

28250214084 is an abundant number, since it is smaller than the sum of its proper divisors (44102724483).

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

28250214084 is a wasteful number, since it uses less digits than its factorization.

28250214084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 742 (or 371 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

Multiplying 28250214084 by its sum of digits (36), we get a square (1017007707024 = 1008468²).

28250214084 divided by its sum of digits (36) gives a square (784728169 = 28013²).

The spelling of 28250214084 in words is "twenty-eight billion, two hundred fifty million, two hundred fourteen thousand, eighty-four".