851474880 has 168 divisors, whose sum is σ = 3000567024. Its totient is φ = 221491200.

The previous prime is 851474851. The next prime is 851474909. The reversal of 851474880 is 88474158.

It is an interprime number because it is at equal distance from previous prime (851474851) and next prime (851474909).

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 23 ways as a sum of consecutive naturals, for example, 114475 + ... + 121685.

It is an arithmetic number, because the mean of its divisors is an integer number (17860518).

Almost surely, 2^851474880 is an apocalyptic number.

851474880 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 851474880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1500283512).

851474880 is an abundant number, since it is smaller than the sum of its proper divisors (2149092144).

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

851474880 is a wasteful number, since it uses less digits than its factorization.

851474880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7275 (or 7262 counting only the distinct ones).

The product of its (nonzero) digits is 286720, while the sum is 45.

The square root of 851474880 is about 29180.0424948286. The cubic root of 851474880 is about 947.8158056922.

The spelling of 851474880 in words is "eight hundred fifty-one million, four hundred seventy-four thousand, eight hundred eighty".