2170456 has 16 divisors (see below), whose sum is σ = 4147200. Its totient is φ = 1064544.

The previous prime is 2170453. The next prime is 2170477. The reversal of 2170456 is 6540712.

It is a self number, because there is not a number n which added to its sum of digits gives 2170456.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2170453) 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, 2136 + ... + 2983.

It is an arithmetic number, because the mean of its divisors is an integer number (259200).

2^2170456 is an apocalyptic number.

It is an amenable number.

2170456 is a deficient number, since it is larger than the sum of its proper divisors (1976744).

2170456 is a wasteful number, since it uses less digits than its factorization.

2170456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5178 (or 5174 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 2170456 is about 1473.2467546206. The cubic root of 2170456 is about 129.4743269372.

The spelling of 2170456 in words is "two million, one hundred seventy thousand, four hundred fifty-six".