2620240 has 40 divisors (see below), whose sum is σ = 6963840. Its totient is φ = 898176.

The previous prime is 2620231. The next prime is 2620253. The reversal of 2620240 is 420262.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1780 + ... + 2899.

It is an arithmetic number, because the mean of its divisors is an integer number (174096).

2^2620240 is an apocalyptic number.

2620240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2620240 is an abundant number, since it is smaller than the sum of its proper divisors (4343600).

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

2620240 is a wasteful number, since it uses less digits than its factorization.

2620240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4699 (or 4693 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 2620240 is about 1618.7155401738. The cubic root of 2620240 is about 137.8627775496.

The spelling of 2620240 in words is "two million, six hundred twenty thousand, two hundred forty".