28315124 has 6 divisors (see below), whose sum is σ = 49551474. Its totient is φ = 14157560.

The previous prime is 28315117. The next prime is 28315141. The reversal of 28315124 is 42151382.

It can be written as a sum of positive squares in only one way, i.e., 19963024 + 8352100 = 4468^2 + 2890^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28315093 and 28315102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3539387 + ... + 3539394.

It is an arithmetic number, because the mean of its divisors is an integer number (8258579).

Almost surely, 2^28315124 is an apocalyptic number.

It is an amenable number.

28315124 is a deficient number, since it is larger than the sum of its proper divisors (21236350).

28315124 is a wasteful number, since it uses less digits than its factorization.

28315124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7078785 (or 7078783 counting only the distinct ones).

The product of its digits is 1920, while the sum is 26.

The square root of 28315124 is about 5321.1957302847. The cubic root of 28315124 is about 304.7938192660.

The spelling of 28315124 in words is "twenty-eight million, three hundred fifteen thousand, one hundred twenty-four".