28628572 has 12 divisors (see below), whose sum is σ = 57257200. Its totient is φ = 12269376.

The previous prime is 28628519. The next prime is 28628591. The reversal of 28628572 is 27582682.

28628572 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 511197 + ... + 511252.

Almost surely, 2^28628572 is an apocalyptic number.

It is an amenable number.

28628572 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28628572 is a wasteful number, since it uses less digits than its factorization.

28628572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022460 (or 1022458 counting only the distinct ones).

The product of its digits is 107520, while the sum is 40.

The square root of 28628572 is about 5350.5674465425. The cubic root of 28628572 is about 305.9143821867.

The spelling of 28628572 in words is "twenty-eight million, six hundred twenty-eight thousand, five hundred seventy-two".