28370928 has 20 divisors (see below), whose sum is σ = 73291688. Its totient is φ = 9456960.

The previous prime is 28370887. The next prime is 28370929. The reversal of 28370928 is 82907382.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28370929) 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, 295483 + ... + 295578.

Almost surely, 2^28370928 is an apocalyptic number.

It is an amenable number.

28370928 is an abundant number, since it is smaller than the sum of its proper divisors (44920760).

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

28370928 is a wasteful number, since it uses less digits than its factorization.

28370928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 591072 (or 591066 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 28370928 is about 5326.4367075935. The cubic root of 28370928 is about 304.9939190761.

The spelling of 28370928 in words is "twenty-eight million, three hundred seventy thousand, nine hundred twenty-eight".