2691172 has 24 divisors (see below), whose sum is σ = 5306112. Its totient is φ = 1183200.

The previous prime is 2691163. The next prime is 2691187. The reversal of 2691172 is 2711962.

It is a happy number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 2691172.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 378 + ... + 2350.

It is an arithmetic number, because the mean of its divisors is an integer number (221088).

2^2691172 is an apocalyptic number.

2691172 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2691172 is a deficient number, since it is larger than the sum of its proper divisors (2614940).

2691172 is a wasteful number, since it uses less digits than its factorization.

2691172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2019 (or 2017 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 2691172 is about 1640.4791982832. The cubic root of 2691172 is about 139.0957365408.

It can be divided in two parts, 269 and 1172, that added together give a palindrome (1441).

The spelling of 2691172 in words is "two million, six hundred ninety-one thousand, one hundred seventy-two".