839528820 has 96 divisors (see below), whose sum is σ = 2812803840. Its totient is φ = 206651520.

The previous prime is 839528803. The next prime is 839528831. The reversal of 839528820 is 28825938.

It is a super-2 number, since 2×839528820² = 1409617279221184800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52776 + ... + 66815.

It is an arithmetic number, because the mean of its divisors is an integer number (29300040).

Almost surely, 2^839528820 is an apocalyptic number.

It is an amenable number.

839528820 is an abundant number, since it is smaller than the sum of its proper divisors (1973275020).

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

839528820 is a wasteful number, since it uses less digits than its factorization.

839528820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119622 (or 119614 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 839528820 is about 28974.6237249080. The cubic root of 839528820 is about 943.3623437772.

The spelling of 839528820 in words is "eight hundred thirty-nine million, five hundred twenty-eight thousand, eight hundred twenty".