28625574 has 8 divisors (see below), whose sum is σ = 57251160. Its totient is φ = 9541856.

The previous prime is 28625557. The next prime is 28625579. The reversal of 28625574 is 47552682.

It is a sphenic number, since it is the product of 3 distinct primes.

28625574 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28625579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2385459 + ... + 2385470.

It is an arithmetic number, because the mean of its divisors is an integer number (7156395).

Almost surely, 2^28625574 is an apocalyptic number.

28625574 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.

28625574 is a wasteful number, since it uses less digits than its factorization.

28625574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4770934.

The product of its digits is 134400, while the sum is 39.

The square root of 28625574 is about 5350.2872820065. The cubic root of 28625574 is about 305.9037033058.

The spelling of 28625574 in words is "twenty-eight million, six hundred twenty-five thousand, five hundred seventy-four".