28417132 has 12 divisors (see below), whose sum is σ = 52655400. Its totient is φ = 13372736.

The previous prime is 28417117. The next prime is 28417163. The reversal of 28417132 is 23171482.

It is a super-2 number, since 2×28417132² = 1615066782210848, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28417132.

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, 208882 + ... + 209017.

It is an arithmetic number, because the mean of its divisors is an integer number (4387950).

Almost surely, 2^28417132 is an apocalyptic number.

It is an amenable number.

28417132 is a deficient number, since it is larger than the sum of its proper divisors (24238268).

28417132 is a wasteful number, since it uses less digits than its factorization.

28417132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417920 (or 417918 counting only the distinct ones).

The product of its digits is 2688, while the sum is 28.

The square root of 28417132 is about 5330.7721767114. The cubic root of 28417132 is about 305.1593971088.

The spelling of 28417132 in words is "twenty-eight million, four hundred seventeen thousand, one hundred thirty-two".