2129772 has 12 divisors (see below), whose sum is σ = 4969496. Its totient is φ = 709920.

The previous prime is 2129753. The next prime is 2129773. The reversal of 2129772 is 2779212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (2129773) 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, 88729 + ... + 88752.

2^2129772 is an apocalyptic number.

It is an amenable number.

2129772 is an abundant number, since it is smaller than the sum of its proper divisors (2839724).

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

2129772 is a wasteful number, since it uses less digits than its factorization.

2129772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177488 (or 177486 counting only the distinct ones).

The product of its digits is 3528, while the sum is 30.

The square root of 2129772 is about 1459.3738383293. The cubic root of 2129772 is about 128.6602441006.

The spelling of 2129772 in words is "two million, one hundred twenty-nine thousand, seven hundred seventy-two".