28372768 has 24 divisors (see below), whose sum is σ = 56055132. Its totient is φ = 14136576.

The previous prime is 28372741. The next prime is 28372769. The reversal of 28372768 is 86727382.

It can be written as a sum of positive squares in 2 ways, for example, as 27751824 + 620944 = 5268^2 + 788^2 .

It is not an unprimeable number, because it can be changed into a prime (28372769) 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, 8746 + ... + 11542.

Almost surely, 2^28372768 is an apocalyptic number.

It is an amenable number.

28372768 is a deficient number, since it is larger than the sum of its proper divisors (27682364).

28372768 is a wasteful number, since it uses less digits than its factorization.

28372768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3124 (or 3116 counting only the distinct ones).

The product of its digits is 225792, while the sum is 43.

The square root of 28372768 is about 5326.6094281447. The cubic root of 28372768 is about 305.0005124062. Note that the first 3 decimals are identical.

The spelling of 28372768 in words is "twenty-eight million, three hundred seventy-two thousand, seven hundred sixty-eight".