2820918912 has 128 divisors (see below), whose sum is σ = 8601292800. Its totient is φ = 802421760.

The previous prime is 2820918911. The next prime is 2820918917. The reversal of 2820918912 is 2198190282.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (2820918911) 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, 640237 + ... + 644627.

It is an arithmetic number, because the mean of its divisors is an integer number (67197600).

Almost surely, 2^2820918912 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 2820918912, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4300646400).

2820918912 is an abundant number, since it is smaller than the sum of its proper divisors (5780373888).

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

2820918912 is a wasteful number, since it uses less digits than its factorization.

2820918912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4654 (or 4642 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 42.

The square root of 2820918912 is about 53112.3235417168. The cubic root of 2820918912 is about 1412.9610846708.

The spelling of 2820918912 in words is "two billion, eight hundred twenty million, nine hundred eighteen thousand, nine hundred twelve".