2639378328 has 16 divisors (see below), whose sum is σ = 6598445880. Its totient is φ = 879792768.

The previous prime is 2639378311. The next prime is 2639378351. The reversal of 2639378328 is 8238739362.

It is a happy number.

It is a hoax number, since the sum of its digits (51) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 54987025 + ... + 54987072.

Almost surely, 2^2639378328 is an apocalyptic number.

It is an amenable number.

2639378328 is an abundant number, since it is smaller than the sum of its proper divisors (3959067552).

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

2639378328 is a wasteful number, since it uses less digits than its factorization.

2639378328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109974106 (or 109974102 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 51.

The square root of 2639378328 is about 51374.8803210285. The cubic root of 2639378328 is about 1381.9761522172.

The spelling of 2639378328 in words is "two billion, six hundred thirty-nine million, three hundred seventy-eight thousand, three hundred twenty-eight".