851290132 has 144 divisors (see below), whose sum is σ = 2000388096. Its totient is φ = 312984000.

The previous prime is 851290129. The next prime is 851290151. The reversal of 851290132 is 231092158.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 851290094 and 851290103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3141157 + ... + 3141427.

It is an arithmetic number, because the mean of its divisors is an integer number (13891584).

Almost surely, 2^851290132 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 851290132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1000194048).

851290132 is an abundant number, since it is smaller than the sum of its proper divisors (1149097964).

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

851290132 is a wasteful number, since it uses less digits than its factorization.

851290132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 369 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 851290132 is about 29176.8766662918. The cubic root of 851290132 is about 947.7472502383.

The spelling of 851290132 in words is "eight hundred fifty-one million, two hundred ninety thousand, one hundred thirty-two".