28417732 has 24 divisors (see below), whose sum is σ = 57618176. Its totient is φ = 12011328.

The previous prime is 28417723. The next prime is 28417733. The reversal of 28417732 is 23771482.

It is not an unprimeable number, because it can be changed into a prime (28417733) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 4908 + ... + 8995.

Almost surely, 2^28417732 is an apocalyptic number.

It is an amenable number.

28417732 is an abundant number, since it is smaller than the sum of its proper divisors (29200444).

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

28417732 is a wasteful number, since it uses less digits than its factorization.

28417732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13987 (or 13985 counting only the distinct ones).

The product of its digits is 18816, while the sum is 34.

The square root of 28417732 is about 5330.8284534395. The cubic root of 28417732 is about 305.1615448080.

The spelling of 28417732 in words is "twenty-eight million, four hundred seventeen thousand, seven hundred thirty-two".