2991772 has 24 divisors (see below), whose sum is σ = 6088320. Its totient is φ = 1259760.

The previous prime is 2991761. The next prime is 2991773. The reversal of 2991772 is 2771992.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991773) 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, 747 + ... + 2557.

It is an arithmetic number, because the mean of its divisors is an integer number (253680).

2^2991772 is an apocalyptic number.

It is an amenable number.

2991772 is an abundant number, since it is smaller than the sum of its proper divisors (3096548).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2991772 is a wasteful number, since it uses less digits than its factorization.

2991772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1881 (or 1879 counting only the distinct ones).

The product of its digits is 15876, while the sum is 37.

The square root of 2991772 is about 1729.6739577157. The cubic root of 2991772 is about 144.0929826425.

The spelling of 2991772 in words is "two million, nine hundred ninety-one thousand, seven hundred seventy-two".