2921772 has 36 divisors (see below), whose sum is σ = 7932120. Its totient is φ = 834624.

The previous prime is 2921771. The next prime is 2921777. The reversal of 2921772 is 2771292.

It is a happy number.

It is a d-powerful number, because it can be written as 2² + 9³ + 2²⁰ + 1 + 7³ + 7⁷ + 2²⁰ .

It is not an unprimeable number, because it can be changed into a prime (2921771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1897 + ... + 3072.

2^2921772 is an apocalyptic number.

It is an amenable number.

2921772 is an abundant number, since it is smaller than the sum of its proper divisors (5010348).

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

2921772 is a wasteful number, since it uses less digits than its factorization.

2921772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4990 (or 4981 counting only the distinct ones).

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

The square root of 2921772 is about 1709.3191627078. The cubic root of 2921772 is about 142.9602967351.

The spelling of 2921772 in words is "two million, nine hundred twenty-one thousand, seven hundred seventy-two".