28417252 has 12 divisors (see below), whose sum is σ = 49771260. Its totient is φ = 14196896.

The previous prime is 28417247. The next prime is 28417267. The reversal of 28417252 is 25271482.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 8916196 + 19501056 = 2986^2 + 4416^2 .

It is a super-2 number, since 2×28417252² = 1615080422463008, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4758 + ... + 8914.

It is an arithmetic number, because the mean of its divisors is an integer number (4147605).

Almost surely, 2^28417252 is an apocalyptic number.

It is an amenable number.

28417252 is a deficient number, since it is larger than the sum of its proper divisors (21354008).

28417252 is a wasteful number, since it uses less digits than its factorization.

28417252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5870 (or 5868 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 28417252 is about 5330.7834321045. The cubic root of 28417252 is about 305.1598266511.

The spelling of 28417252 in words is "twenty-eight million, four hundred seventeen thousand, two hundred fifty-two".