2149972 has 24 divisors (see below), whose sum is σ = 4146912. Its totient is φ = 967200.

The previous prime is 2149937. The next prime is 2149991. The reversal of 2149972 is 2799412.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5578 + ... + 5950.

It is an arithmetic number, because the mean of its divisors is an integer number (172788).

2^2149972 is an apocalyptic number.

2149972 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2149972 is a deficient number, since it is larger than the sum of its proper divisors (1996940).

2149972 is a wasteful number, since it uses less digits than its factorization.

2149972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 517 counting only the distinct ones).

The product of its digits is 9072, while the sum is 34.

The square root of 2149972 is about 1466.2782819097. The cubic root of 2149972 is about 129.0657277772.

The spelling of 2149972 in words is "two million, one hundred forty-nine thousand, nine hundred seventy-two".