28397588 has 12 divisors (see below), whose sum is σ = 50753472. Its totient is φ = 13896600.

The previous prime is 28397573. The next prime is 28397597. The reversal of 28397588 is 88579382.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 75338 + ... + 75713.

It is an arithmetic number, because the mean of its divisors is an integer number (4229456).

Almost surely, 2^28397588 is an apocalyptic number.

It is an amenable number.

28397588 is a deficient number, since it is larger than the sum of its proper divisors (22355884).

28397588 is a wasteful number, since it uses less digits than its factorization.

28397588 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151102 (or 151100 counting only the distinct ones).

The product of its digits is 967680, while the sum is 50.

The square root of 28397588 is about 5328.9387311171. The cubic root of 28397588 is about 305.0894228524.

The spelling of 28397588 in words is "twenty-eight million, three hundred ninety-seven thousand, five hundred eighty-eight".