2620256 has 12 divisors (see below), whose sum is σ = 5158692. Its totient is φ = 1310112.

The previous prime is 2620253. The next prime is 2620259. The reversal of 2620256 is 6520262.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2620253) and next prime (2620259).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2620253) by changing a digit.

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 as a sum of consecutive naturals, namely, 40910 + ... + 40973.

It is an arithmetic number, because the mean of its divisors is an integer number (429891).

2^2620256 is an apocalyptic number.

It is an amenable number.

2620256 is a deficient number, since it is larger than the sum of its proper divisors (2538436).

2620256 is an equidigital number, since it uses as much as digits as its factorization.

2620256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81893 (or 81885 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 2620256 is about 1618.7204823564. The cubic root of 2620256 is about 137.8630581600.

The spelling of 2620256 in words is "two million, six hundred twenty thousand, two hundred fifty-six".