28625742 has 24 divisors (see below), whose sum is σ = 65287560. Its totient is φ = 9039600.

The previous prime is 28625713. The next prime is 28625759. The reversal of 28625742 is 24752682.

28625742 is a `hidden beast` number, since 2 + 86 + 2 + 574 + 2 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28625697 and 28625706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 41509 + ... + 42192.

It is an arithmetic number, because the mean of its divisors is an integer number (2720315).

Almost surely, 2^28625742 is an apocalyptic number.

28625742 is an abundant number, since it is smaller than the sum of its proper divisors (36661818).

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

28625742 is a wasteful number, since it uses less digits than its factorization.

28625742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83728 (or 83725 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 28625742 is about 5350.3029820749. The cubic root of 28625742 is about 305.9043017418.

The spelling of 28625742 in words is "twenty-eight million, six hundred twenty-five thousand, seven hundred forty-two".