2851022020 has 48 divisors (see below), whose sum is σ = 7464498048. Its totient is φ = 888629760.

The previous prime is 2851021993. The next prime is 2851022033. The reversal of 2851022020 is 202201582.

2851022020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 2851021982 and 2851022000.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 924117 + ... + 927196.

It is an arithmetic number, because the mean of its divisors is an integer number (155510376).

Almost surely, 2^2851022020 is an apocalyptic number.

2851022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2851022020 is an abundant number, since it is smaller than the sum of its proper divisors (4613476028).

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

2851022020 is a wasteful number, since it uses less digits than its factorization.

2851022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851340 (or 1851338 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 2851022020 is about 53394.9624964753. The cubic root of 2851022020 is about 1417.9693947745.

The spelling of 2851022020 in words is "two billion, eight hundred fifty-one million, twenty-two thousand, twenty".