28093525974 has 36 divisors (see below), whose sum is σ = 63132028596. Its totient is φ = 9363276972.

The previous prime is 28093525853. The next prime is 28093525981. The reversal of 28093525974 is 47952539082.

28093525974 is a `hidden beast` number, since 28 + 0 + 9 + 3 + 525 + 97 + 4 = 666.

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

It is a self number, because there is not a number n which added to its sum of digits gives 28093525974.

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 17 ways as a sum of consecutive naturals, for example, 3691257 + ... + 3698859.

It is an arithmetic number, because the mean of its divisors is an integer number (1753667461).

Almost surely, 2^28093525974 is an apocalyptic number.

28093525974 is an abundant number, since it is smaller than the sum of its proper divisors (35038502622).

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

28093525974 is an frugal number, since it uses more digits than its factorization.

28093525974 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15223 (or 7608 counting only the distinct ones).

The product of its (nonzero) digits is 5443200, while the sum is 54.

Multiplying 28093525974 by its sum of digits (54), we get a square (1517050402596 = 1231686²).

28093525974 divided by its sum of digits (54) gives a square (520250481 = 22809²).

The spelling of 28093525974 in words is "twenty-eight billion, ninety-three million, five hundred twenty-five thousand, nine hundred seventy-four".