28530484 has 12 divisors (see below), whose sum is σ = 49984900. Its totient is φ = 14249088.

The previous prime is 28530479. The next prime is 28530497. The reversal of 28530484 is 48403582.

It can be written as a sum of positive squares in 2 ways, for example, as 9363600 + 19166884 = 3060^2 + 4378^2 .

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

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, 502 + ... + 7570.

Almost surely, 2^28530484 is an apocalyptic number.

It is an amenable number.

28530484 is a deficient number, since it is larger than the sum of its proper divisors (21454416).

28530484 is a wasteful number, since it uses less digits than its factorization.

28530484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8082 (or 8080 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The square root of 28530484 is about 5341.3934511511. The cubic root of 28530484 is about 305.5646049894.

The spelling of 28530484 in words is "twenty-eight million, five hundred thirty thousand, four hundred eighty-four".