2620540 has 24 divisors (see below), whose sum is σ = 5927040. Its totient is φ = 967488.

The previous prime is 2620531. The next prime is 2620573. The reversal of 2620540 is 450262.

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, 4780 + ... + 5299.

It is an arithmetic number, because the mean of its divisors is an integer number (246960).

2^2620540 is an apocalyptic number.

2620540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620540 is an abundant number, since it is smaller than the sum of its proper divisors (3306500).

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

2620540 is a wasteful number, since it uses less digits than its factorization.

2620540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10101 (or 10099 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2620540 is about 1618.8082035868. The cubic root of 2620540 is about 137.8680388049.

It can be divided in two parts, 2620 and 540, that added together give a triangular number (3160 = T₇₉).

The spelling of 2620540 in words is "two million, six hundred twenty thousand, five hundred forty".