2972857 has 4 divisors (see below), whose sum is σ = 3017296. Its totient is φ = 2928420.

The previous prime is 2972843. The next prime is 2972863. The reversal of 2972857 is 7582792.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2972857 - 2⁷ = 2972729 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2972887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22119 + ... + 22252.

It is an arithmetic number, because the mean of its divisors is an integer number (754324).

2^2972857 is an apocalyptic number.

It is an amenable number.

2972857 is a deficient number, since it is larger than the sum of its proper divisors (44439).

2972857 is an equidigital number, since it uses as much as digits as its factorization.

2972857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44438.

The product of its digits is 70560, while the sum is 40.

The square root of 2972857 is about 1724.1974944884. The cubic root of 2972857 is about 143.7886721410.

The spelling of 2972857 in words is "two million, nine hundred seventy-two thousand, eight hundred fifty-seven".