2639424 has 56 divisors (see below), whose sum is σ = 7132320. Its totient is φ = 861184.

The previous prime is 2639419. The next prime is 2639431. The reversal of 2639424 is 4249362.

It is a junction number, because it is equal to n+sod(n) for n = 2639391 and 2639400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11212 + ... + 11444.

2^2639424 is an apocalyptic number.

2639424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2639424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3566160).

2639424 is an abundant number, since it is smaller than the sum of its proper divisors (4492896).

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

2639424 is a wasteful number, since it uses less digits than its factorization.

2639424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 307 (or 297 counting only the distinct ones).

The product of its digits is 10368, while the sum is 30.

The square root of 2639424 is about 1624.6304195108. The cubic root of 2639424 is about 138.1984123444.

The spelling of 2639424 in words is "two million, six hundred thirty-nine thousand, four hundred twenty-four".