2639304 has 40 divisors (see below), whose sum is σ = 7394310. Its totient is φ = 879552.

The previous prime is 2639303. The next prime is 2639323. The reversal of 2639304 is 4039362.

It can be written as a sum of positive squares in only one way, i.e., 2566404 + 72900 = 1602^2 + 270^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2639303) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1389 + ... + 2684.

2^2639304 is an apocalyptic number.

2639304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2639304 is an abundant number, since it is smaller than the sum of its proper divisors (4755006).

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

2639304 is a wasteful number, since it uses less digits than its factorization.

2639304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4091 (or 4078 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The square root of 2639304 is about 1624.5934876147. The cubic root of 2639304 is about 138.1963179404.

The spelling of 2639304 in words is "two million, six hundred thirty-nine thousand, three hundred four".