28530502 has 32 divisors (see below), whose sum is σ = 57464064. Its totient is φ = 10260000.

The previous prime is 28530497. The next prime is 28530521. The reversal of 28530502 is 20503582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5124 + ... + 9127.

It is an arithmetic number, because the mean of its divisors is an integer number (1795752).

Almost surely, 2^28530502 is an apocalyptic number.

28530502 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28530502 is an abundant number, since it is smaller than the sum of its proper divisors (28933562).

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

28530502 is a wasteful number, since it uses less digits than its factorization.

28530502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14284.

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 28530502 is about 5341.3951361044. The cubic root of 28530502 is about 305.5646692501.

The spelling of 28530502 in words is "twenty-eight million, five hundred thirty thousand, five hundred two".