2651840 has 28 divisors (see below), whose sum is σ = 6315456. Its totient is φ = 1060608.

The previous prime is 2651837. The next prime is 2651867. The reversal of 2651840 is 481562.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3824 + ... + 4463.

It is an arithmetic number, because the mean of its divisors is an integer number (225552).

2^2651840 is an apocalyptic number.

2651840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2651840 is an abundant number, since it is smaller than the sum of its proper divisors (3663616).

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

2651840 is an equidigital number, since it uses as much as digits as its factorization.

2651840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8304 (or 8294 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 2651840 is about 1628.4471130497. The cubic root of 2651840 is about 138.4147711634.

The spelling of 2651840 in words is "two million, six hundred fifty-one thousand, eight hundred forty".