2646244220 has 24 divisors (see below), whose sum is σ = 5558087808. Its totient is φ = 1058312000.

The previous prime is 2646244219. The next prime is 2646244273. The reversal of 2646244220 is 224426462.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 194645 + ... + 207795.

It is an arithmetic number, because the mean of its divisors is an integer number (231586992).

Almost surely, 2^2646244220 is an apocalyptic number.

2646244220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2646244220 is an abundant number, since it is smaller than the sum of its proper divisors (2911843588).

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

2646244220 is a wasteful number, since it uses less digits than its factorization.

2646244220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23221 (or 23219 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 32.

The square root of 2646244220 is about 51441.6584102807. The cubic root of 2646244220 is about 1383.1734396248.

The spelling of 2646244220 in words is "two billion, six hundred forty-six million, two hundred forty-four thousand, two hundred twenty".