28475252 has 12 divisors (see below), whose sum is σ = 53664996. Its totient is φ = 13142400.

The previous prime is 28475203. The next prime is 28475261. The reversal of 28475252 is 25257482.

It can be written as a sum of positive squares in 2 ways, for example, as 19678096 + 8797156 = 4436^2 + 2966^2 .

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, 273749 + ... + 273852.

It is an arithmetic number, because the mean of its divisors is an integer number (4472083).

Almost surely, 2^28475252 is an apocalyptic number.

It is an amenable number.

28475252 is a deficient number, since it is larger than the sum of its proper divisors (25189744).

28475252 is a wasteful number, since it uses less digits than its factorization.

28475252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 547618 (or 547616 counting only the distinct ones).

The product of its digits is 44800, while the sum is 35.

The square root of 28475252 is about 5336.2207600511. The cubic root of 28475252 is about 305.3672973581.

It can be divided in two parts, 284752 and 52, that multiplied together give a square (14807104 = 3848²).

The spelling of 28475252 in words is "twenty-eight million, four hundred seventy-five thousand, two hundred fifty-two".