28306252 has 24 divisors (see below), whose sum is σ = 53491536. Its totient is φ = 13028928.

The previous prime is 28306247. The next prime is 28306273. The reversal of 28306252 is 25260382.

It is a self number, because there is not a number n which added to its sum of digits gives 28306252.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35118 + ... + 35914.

It is an arithmetic number, because the mean of its divisors is an integer number (2228814).

Almost surely, 2^28306252 is an apocalyptic number.

It is an amenable number.

28306252 is a deficient number, since it is larger than the sum of its proper divisors (25185284).

28306252 is a wasteful number, since it uses less digits than its factorization.

28306252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1497 (or 1495 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 28306252 is about 5320.3620177578. The cubic root of 28306252 is about 304.7619821785.

The spelling of 28306252 in words is "twenty-eight million, three hundred six thousand, two hundred fifty-two".