28574590 has 32 divisors (see below), whose sum is σ = 57314304. Its totient is φ = 10167840.

The previous prime is 28574587. The next prime is 28574597. The reversal of 28574590 is 9547582.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28574597) 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 15 ways as a sum of consecutive naturals, for example, 2407 + ... + 7933.

It is an arithmetic number, because the mean of its divisors is an integer number (1791072).

Almost surely, 2^28574590 is an apocalyptic number.

28574590 is an abundant number, since it is smaller than the sum of its proper divisors (28739714).

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

28574590 is a wasteful number, since it uses less digits than its factorization.

28574590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5592.

The product of its (nonzero) digits is 100800, while the sum is 40.

The square root of 28574590 is about 5345.5205546326. The cubic root of 28574590 is about 305.7219839470.

It can be divided in two parts, 2857 and 4590, that added together give a palindrome (7447).

The spelling of 28574590 in words is "twenty-eight million, five hundred seventy-four thousand, five hundred ninety".