2639247108 has 24 divisors (see below), whose sum is σ = 6182212512. Its totient is φ = 876324864.

The previous prime is 2639247067. The next prime is 2639247113. The reversal of 2639247108 is 8017429362.

It is a self number, because there is not a number n which added to its sum of digits gives 2639247108.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424810 + ... + 430977.

It is an arithmetic number, because the mean of its divisors is an integer number (257592188).

Almost surely, 2^2639247108 is an apocalyptic number.

It is an amenable number.

2639247108 is an abundant number, since it is smaller than the sum of its proper divisors (3542965404).

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

2639247108 is a wasteful number, since it uses less digits than its factorization.

2639247108 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856051 (or 856049 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 42.

The square root of 2639247108 is about 51373.6032218882. The cubic root of 2639247108 is about 1381.9532496125.

The spelling of 2639247108 in words is "two billion, six hundred thirty-nine million, two hundred forty-seven thousand, one hundred eight".