28570038 has 24 divisors (see below), whose sum is σ = 66469752. Its totient is φ = 8162784.

The previous prime is 28570007. The next prime is 28570039. The reversal of 28570038 is 83007582.

It is a junction number, because it is equal to n+sod(n) for n = 28569990 and 28570008.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28570039) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48295 + ... + 48882.

It is an arithmetic number, because the mean of its divisors is an integer number (2769573).

Almost surely, 2^28570038 is an apocalyptic number.

28570038 is an abundant number, since it is smaller than the sum of its proper divisors (37899714).

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

28570038 is a wasteful number, since it uses less digits than its factorization.

28570038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97196 (or 97189 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28570038 is about 5345.0947606193. The cubic root of 28570038 is about 305.7057490057.

The spelling of 28570038 in words is "twenty-eight million, five hundred seventy thousand, thirty-eight".