2620040 has 32 divisors (see below), whose sum is σ = 6243480. Its totient is φ = 986112.

The previous prime is 2620039. The next prime is 2620073. The reversal of 2620040 is 400262.

It can be written as a sum of positive squares in 4 ways, for example, as 2617924 + 2116 = 1618^2 + 46^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2619997 and 2620024.

It is a congruent number.

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, 1247 + ... + 2606.

2^2620040 is an apocalyptic number.

2620040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620040 is an abundant number, since it is smaller than the sum of its proper divisors (3623440).

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

2620040 is a wasteful number, since it uses less digits than its factorization.

2620040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3881 (or 3877 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 2620040 is about 1618.6537616180. The cubic root of 2620040 is about 137.8592698229.

The spelling of 2620040 in words is "two million, six hundred twenty thousand, forty".