28365156 has 36 divisors (see below), whose sum is σ = 71890000. Its totient is φ = 9430128.

The previous prime is 28365151. The next prime is 28365173. The reversal of 28365156 is 65156382.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 28365156.

It is not an unprimeable number, because it can be changed into a prime (28365151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17175 + ... + 18753.

Almost surely, 2^28365156 is an apocalyptic number.

It is an amenable number.

28365156 is an abundant number, since it is smaller than the sum of its proper divisors (43524844).

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

28365156 is a wasteful number, since it uses less digits than its factorization.

28365156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2083 counting only the distinct ones).

The product of its digits is 43200, while the sum is 36.

The square root of 28365156 is about 5325.8948543883. The cubic root of 28365156 is about 304.9732342363.

The spelling of 28365156 in words is "twenty-eight million, three hundred sixty-five thousand, one hundred fifty-six".