28811036 has 12 divisors (see below), whose sum is σ = 52158120. Its totient is φ = 13908720.

The previous prime is 28811033. The next prime is 28811051. The reversal of 28811036 is 63011882.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28811033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124070 + ... + 124301.

It is an arithmetic number, because the mean of its divisors is an integer number (4346510).

Almost surely, 2^28811036 is an apocalyptic number.

It is an amenable number.

28811036 is a deficient number, since it is larger than the sum of its proper divisors (23347084).

28811036 is a wasteful number, since it uses less digits than its factorization.

28811036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248404 (or 248402 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 29.

The square root of 28811036 is about 5367.5912661081. The cubic root of 28811036 is about 306.5629206931.

The spelling of 28811036 in words is "twenty-eight million, eight hundred eleven thousand, thirty-six".