2641856 has 28 divisors (see below), whose sum is σ = 5992368. Its totient is φ = 1132032.

The previous prime is 2641841. The next prime is 2641879. The reversal of 2641856 is 6581462.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

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, 2501 + ... + 3396.

2^2641856 is an apocalyptic number.

It is an amenable number.

2641856 is an abundant number, since it is smaller than the sum of its proper divisors (3350512).

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

2641856 is an equidigital number, since it uses as much as digits as its factorization.

2641856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5916 (or 5906 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 2641856 is about 1625.3787250976. The cubic root of 2641856 is about 138.2408452595.

It can be divided in two parts, 264 and 1856, that multiplied together give a palindrome (489984).

The spelling of 2641856 in words is "two million, six hundred forty-one thousand, eight hundred fifty-six".