2812813780 has 48 divisors (see below), whose sum is σ = 6803951616. Its totient is φ = 956793600.

The previous prime is 2812813777. The next prime is 2812813793. The reversal of 2812813780 is 873182182.

It is a congruent number.

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, 61321 + ... + 96880.

It is an arithmetic number, because the mean of its divisors is an integer number (141748992).

Almost surely, 2^2812813780 is an apocalyptic number.

2812813780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2812813780 is an abundant number, since it is smaller than the sum of its proper divisors (3991137836).

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

2812813780 is a wasteful number, since it uses less digits than its factorization.

2812813780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158344 (or 158342 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 40.

The square root of 2812813780 is about 53035.9668526935. The cubic root of 2812813780 is about 1411.6065352868.

The spelling of 2812813780 in words is "two billion, eight hundred twelve million, eight hundred thirteen thousand, seven hundred eighty".