2891172 has 24 divisors (see below), whose sum is σ = 6785856. Its totient is φ = 958048.

The previous prime is 2891171. The next prime is 2891201. The reversal of 2891172 is 2711982.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2891171) 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, 1753 + ... + 2975.

It is an arithmetic number, because the mean of its divisors is an integer number (282744).

2^2891172 is an apocalyptic number.

It is an amenable number.

2891172 is an abundant number, since it is smaller than the sum of its proper divisors (3894684).

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

2891172 is a wasteful number, since it uses less digits than its factorization.

2891172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427 (or 1425 counting only the distinct ones).

The product of its digits is 2016, while the sum is 30.

The square root of 2891172 is about 1700.3446709417. The cubic root of 2891172 is about 142.4594652329.

The spelling of 2891172 in words is "two million, eight hundred ninety-one thousand, one hundred seventy-two".