2646022620 has 96 divisors (see below), whose sum is σ = 7604513280. Its totient is φ = 687202560.

The previous prime is 2646022597. The next prime is 2646022651. The reversal of 2646022620 is 262206462.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 373471 + ... + 380489.

It is an arithmetic number, because the mean of its divisors is an integer number (79213680).

Almost surely, 2^2646022620 is an apocalyptic number.

2646022620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2646022620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3802256640).

2646022620 is an abundant number, since it is smaller than the sum of its proper divisors (4958490660).

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

2646022620 is a wasteful number, since it uses less digits than its factorization.

2646022620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7195 (or 7193 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2646022620 is about 51439.5044688418. The cubic root of 2646022620 is about 1383.1348289543.

The spelling of 2646022620 in words is "two billion, six hundred forty-six million, twenty-two thousand, six hundred twenty".