2639054220 has 48 divisors (see below), whose sum is σ = 8061113088. Its totient is φ = 639770560.

The previous prime is 2639054213. The next prime is 2639054227. The reversal of 2639054220 is 224509362.

It is an interprime number because it is at equal distance from previous prime (2639054213) and next prime (2639054227).

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (2639054227) 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, 1998624 + ... + 1999943.

It is an arithmetic number, because the mean of its divisors is an integer number (167939856).

Almost surely, 2^2639054220 is an apocalyptic number.

2639054220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2639054220 is an abundant number, since it is smaller than the sum of its proper divisors (5422058868).

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

2639054220 is a wasteful number, since it uses less digits than its factorization.

2639054220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3998590 (or 3998588 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 33.

The square root of 2639054220 is about 51371.7258810720. The cubic root of 2639054220 is about 1381.9195823478.

The spelling of 2639054220 in words is "two billion, six hundred thirty-nine million, fifty-four thousand, two hundred twenty".