2890856 has 8 divisors (see below), whose sum is σ = 5420370. Its totient is φ = 1445424.

The previous prime is 2890813. The next prime is 2890861. The reversal of 2890856 is 6580982.

It can be written as a sum of positive squares in only one way, i.e., 2669956 + 220900 = 1634^2 + 470^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180671 + ... + 180686.

2^2890856 is an apocalyptic number.

It is an amenable number.

2890856 is a deficient number, since it is larger than the sum of its proper divisors (2529514).

2890856 is a wasteful number, since it uses less digits than its factorization.

2890856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361363 (or 361359 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 2890856 is about 1700.2517460659. The cubic root of 2890856 is about 142.4542748543.

The spelling of 2890856 in words is "two million, eight hundred ninety thousand, eight hundred fifty-six".