851442828 has 24 divisors (see below), whose sum is σ = 2032903488. Its totient is φ = 277213776.

The previous prime is 851442821. The next prime is 851442833. The reversal of 851442828 is 828244158.

It is a self number, because there is not a number n which added to its sum of digits gives 851442828.

It is not an unprimeable number, because it can be changed into a prime (851442821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 824526 + ... + 825557.

It is an arithmetic number, because the mean of its divisors is an integer number (84704312).

Almost surely, 2^851442828 is an apocalyptic number.

It is an amenable number.

851442828 is an abundant number, since it is smaller than the sum of its proper divisors (1181460660).

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

851442828 is a wasteful number, since it uses less digits than its factorization.

851442828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1650133 (or 1650131 counting only the distinct ones).

The product of its digits is 163840, while the sum is 42.

The square root of 851442828 is about 29179.4932786709. The cubic root of 851442828 is about 947.8039126917.

The spelling of 851442828 in words is "eight hundred fifty-one million, four hundred forty-two thousand, eight hundred twenty-eight".