2608440 has 32 divisors (see below), whose sum is σ = 7825680. Its totient is φ = 695552.

The previous prime is 2608439. The next prime is 2608447. The reversal of 2608440 is 448062.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 2608440.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2608447) 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, 10749 + ... + 10988.

2^2608440 is an apocalyptic number.

2608440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2608440 is an abundant number, since it is smaller than the sum of its proper divisors (5217240).

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

2608440 is a wasteful number, since it uses less digits than its factorization.

2608440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21751 (or 21747 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 2608440 is about 1615.0665620958. The cubic root of 2608440 is about 137.6555155023.

The spelling of 2608440 in words is "two million, six hundred eight thousand, four hundred forty".