2256620 has 12 divisors (see below), whose sum is σ = 4738944. Its totient is φ = 902640.

The previous prime is 2256619. The next prime is 2256623. The reversal of 2256620 is 266522.

It is a happy number.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2256623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56396 + ... + 56435.

It is an arithmetic number, because the mean of its divisors is an integer number (394912).

2^2256620 is an apocalyptic number.

2256620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256620 is an abundant number, since it is smaller than the sum of its proper divisors (2482324).

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

2256620 is a wasteful number, since it uses less digits than its factorization.

2256620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112840 (or 112838 counting only the distinct ones).

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

The square root of 2256620 is about 1502.2050459242. The cubic root of 2256620 is about 131.1654572706.

The spelling of 2256620 in words is "two million, two hundred fifty-six thousand, six hundred twenty".