2256140 has 12 divisors (see below), whose sum is σ = 4737936. Its totient is φ = 902448.

The previous prime is 2256131. The next prime is 2256169. The reversal of 2256140 is 416522.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 112807 = 2256140 / (2 + 2 + 5 + 6 + 1 + 4 + 0).

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, 56384 + ... + 56423.

It is an arithmetic number, because the mean of its divisors is an integer number (394828).

2^2256140 is an apocalyptic number.

2256140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2256140 is an abundant number, since it is smaller than the sum of its proper divisors (2481796).

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

2256140 is a wasteful number, since it uses less digits than its factorization.

2256140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112816 (or 112814 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 2256140 is about 1502.0452722871. The cubic root of 2256140 is about 131.1561566522.

The spelling of 2256140 in words is "two million, two hundred fifty-six thousand, one hundred forty".