2639080 has 32 divisors (see below), whose sum is σ = 6288840. Its totient is φ = 993280.

The previous prime is 2639071. The next prime is 2639083. The reversal of 2639080 is 809362.

It can be written as a sum of positive squares in 4 ways, for example, as 2477476 + 161604 = 1574^2 + 402^2 .

It is not an unprimeable number, because it can be changed into a prime (2639083) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1261 + ... + 2620.

2^2639080 is an apocalyptic number.

2639080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2639080 is an abundant number, since it is smaller than the sum of its proper divisors (3649760).

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

2639080 is a wasteful number, since it uses less digits than its factorization.

2639080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909 (or 3905 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 2639080 is about 1624.5245458287. The cubic root of 2639080 is about 138.1924082163.

The spelling of 2639080 in words is "two million, six hundred thirty-nine thousand, eighty".