2639976220 has 48 divisors (see below), whose sum is σ = 6339549888. Its totient is φ = 904619520.

The previous prime is 2639976193. The next prime is 2639976253. The reversal of 2639976220 is 226799362.

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, 305560 + ... + 314080.

It is an arithmetic number, because the mean of its divisors is an integer number (132073956).

Almost surely, 2^2639976220 is an apocalyptic number.

2639976220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2639976220 is an abundant number, since it is smaller than the sum of its proper divisors (3699573668).

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

2639976220 is a wasteful number, since it uses less digits than its factorization.

2639976220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10750 (or 10748 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 46.

The square root of 2639976220 is about 51380.6989053283. The cubic root of 2639976220 is about 1382.0804962457.

The spelling of 2639976220 in words is "two billion, six hundred thirty-nine million, nine hundred seventy-six thousand, two hundred twenty".