2856172 has 24 divisors (see below), whose sum is σ = 5503680. Its totient is φ = 1286160.

The previous prime is 2856167. The next prime is 2856173. The reversal of 2856172 is 2716582.

It is not an unprimeable number, because it can be changed into a prime (2856173) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5883 + ... + 6349.

It is an arithmetic number, because the mean of its divisors is an integer number (229320).

2^2856172 is an apocalyptic number.

2856172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2856172 is a deficient number, since it is larger than the sum of its proper divisors (2647508).

2856172 is a wasteful number, since it uses less digits than its factorization.

2856172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621 (or 619 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 2856172 is about 1690.0213016409. The cubic root of 2856172 is about 141.8822670241.

The spelling of 2856172 in words is "two million, eight hundred fifty-six thousand, one hundred seventy-two".