2891992 has 8 divisors (see below), whose sum is σ = 5422500. Its totient is φ = 1445992.

The previous prime is 2891981. The next prime is 2892013. The reversal of 2891992 is 2991982.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180742 + ... + 180757.

2^2891992 is an apocalyptic number.

It is an amenable number.

2891992 is a deficient number, since it is larger than the sum of its proper divisors (2530508).

2891992 is a wasteful number, since it uses less digits than its factorization.

2891992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361505 (or 361501 counting only the distinct ones).

The product of its digits is 23328, while the sum is 40.

The square root of 2891992 is about 1700.5857814294. The cubic root of 2891992 is about 142.4729321728.

It can be divided in two parts, 2891 and 992, that added together give a palindrome (3883).

The spelling of 2891992 in words is "two million, eight hundred ninety-one thousand, nine hundred ninety-two".