28375156 has 12 divisors (see below), whose sum is σ = 49695268. Its totient is φ = 14176512.

The previous prime is 28375153. The next prime is 28375177. The reversal of 28375156 is 65157382.

It can be written as a sum of positive squares in 2 ways, for example, as 25847056 + 2528100 = 5084^2 + 1590^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28375153) 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 3 ways as a sum of consecutive naturals, for example, 6310 + ... + 9826.

Almost surely, 2^28375156 is an apocalyptic number.

It is an amenable number.

28375156 is a deficient number, since it is larger than the sum of its proper divisors (21320112).

28375156 is a wasteful number, since it uses less digits than its factorization.

28375156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5538 (or 5536 counting only the distinct ones).

The product of its digits is 50400, while the sum is 37.

The square root of 28375156 is about 5326.8335810310. The cubic root of 28375156 is about 305.0090689770.

The spelling of 28375156 in words is "twenty-eight million, three hundred seventy-five thousand, one hundred fifty-six".