528138028 has 48 divisors (see below), whose sum is σ = 1033845120. Its totient is φ = 234041600.

The previous prime is 528137999. The next prime is 528138049. The reversal of 528138028 is 820831825.

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 339300 + ... + 340852.

It is an arithmetic number, because the mean of its divisors is an integer number (21538440).

Almost surely, 2^528138028 is an apocalyptic number.

It is an amenable number.

528138028 is a deficient number, since it is larger than the sum of its proper divisors (505707092).

528138028 is a wasteful number, since it uses less digits than its factorization.

528138028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1758 (or 1756 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 37.

The square root of 528138028 is about 22981.2538387269. The cubic root of 528138028 is about 808.3184278212.

The spelling of 528138028 in words is "five hundred twenty-eight million, one hundred thirty-eight thousand, twenty-eight".