851952280 has 64 divisors (see below), whose sum is σ = 2037428640. Its totient is φ = 319506432.

The previous prime is 851952259. The next prime is 851952287. The reversal of 851952280 is 82259158.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (851952287) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 186099 + ... + 190621.

Almost surely, 2^851952280 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 851952280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1018714320).

851952280 is an abundant number, since it is smaller than the sum of its proper divisors (1185476360).

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

851952280 is a wasteful number, since it uses less digits than its factorization.

851952280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4828 (or 4824 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 40.

The square root of 851952280 is about 29188.2215970758. The cubic root of 851952280 is about 947.9929112207.

The spelling of 851952280 in words is "eight hundred fifty-one million, nine hundred fifty-two thousand, two hundred eighty".