851408052 has 96 divisors (see below), whose sum is σ = 2215382400. Its totient is φ = 252334080.

The previous prime is 851408039. The next prime is 851408081. The reversal of 851408052 is 250804158.

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 1435468 + ... + 1436060.

It is an arithmetic number, because the mean of its divisors is an integer number (23076900).

Almost surely, 2^851408052 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851408052, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107691200).

851408052 is an abundant number, since it is smaller than the sum of its proper divisors (1363974348).

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

851408052 is a wasteful number, since it uses less digits than its factorization.

851408052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 833 (or 831 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 33.

The square root of 851408052 is about 29178.8973746439. The cubic root of 851408052 is about 947.7910086045.

The spelling of 851408052 in words is "eight hundred fifty-one million, four hundred eight thousand, fifty-two".