2149172 has 12 divisors (see below), whose sum is σ = 3803940. Its totient is φ = 1062336.

The previous prime is 2149171. The next prime is 2149177. The reversal of 2149172 is 2719412.

It can be written as a sum of positive squares in 2 ways, for example, as 417316 + 1731856 = 646^2 + 1316^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2149171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2663 + ... + 3374.

It is an arithmetic number, because the mean of its divisors is an integer number (316995).

2^2149172 is an apocalyptic number.

It is an amenable number.

2149172 is a deficient number, since it is larger than the sum of its proper divisors (1654768).

2149172 is a wasteful number, since it uses less digits than its factorization.

2149172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6130 (or 6128 counting only the distinct ones).

The product of its digits is 1008, while the sum is 26.

The square root of 2149172 is about 1466.0054570158. The cubic root of 2149172 is about 129.0497174305.

The spelling of 2149172 in words is "two million, one hundred forty-nine thousand, one hundred seventy-two".