2852171820 has 36 divisors (see below), whose sum is σ = 8651588400. Its totient is φ = 760579104.

The previous prime is 2852171807. The next prime is 2852171849. The reversal of 2852171820 is 281712582.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×2852171820² = 16269768181604224800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7922520 + ... + 7922879.

It is an arithmetic number, because the mean of its divisors is an integer number (240321900).

Almost surely, 2^2852171820 is an apocalyptic number.

2852171820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2852171820 is an abundant number, since it is smaller than the sum of its proper divisors (5799416580).

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

2852171820 is a wasteful number, since it uses less digits than its factorization.

2852171820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15845414 (or 15845409 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 36.

The square root of 2852171820 is about 53405.7283444389. The cubic root of 2852171820 is about 1418.1599886590.

The spelling of 2852171820 in words is "two billion, eight hundred fifty-two million, one hundred seventy-one thousand, eight hundred twenty".