2639012 has 18 divisors (see below), whose sum is σ = 4914882. Its totient is φ = 1235584.

The previous prime is 2638973. The next prime is 2639041. The reversal of 2639012 is 2109362.

It can be written as a sum of positive squares in 3 ways, for example, as 2262016 + 376996 = 1504^2 + 614^2 .

It is a super-2 number, since 2×2639012² = 13928768672288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 13298 + ... + 13494.

It is an arithmetic number, because the mean of its divisors is an integer number (273049).

2^2639012 is an apocalyptic number.

It is an amenable number.

2639012 is a deficient number, since it is larger than the sum of its proper divisors (2275870).

2639012 is a wasteful number, since it uses less digits than its factorization.

2639012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415 (or 216 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2639012 is about 1624.5036164934. The cubic root of 2639012 is about 138.1912212920.

The spelling of 2639012 in words is "two million, six hundred thirty-nine thousand, twelve".