2291772 has 24 divisors (see below), whose sum is σ = 6111616. Its totient is φ = 654768.

The previous prime is 2291749. The next prime is 2291797. The reversal of 2291772 is 2771922.

It is a happy number.

2291772 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a d-powerful number, because it can be written as 2¹¹ + 2¹⁷ + 9⁵ + 1 + 7² + 7⁴ + 2²¹ .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13558 + ... + 13725.

2^2291772 is an apocalyptic number.

It is an amenable number.

2291772 is an abundant number, since it is smaller than the sum of its proper divisors (3819844).

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

2291772 is a wasteful number, since it uses less digits than its factorization.

2291772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27297 (or 27295 counting only the distinct ones).

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

The square root of 2291772 is about 1513.8599671040. The cubic root of 2291772 is about 131.8430181574.

The spelling of 2291772 in words is "two million, two hundred ninety-one thousand, seven hundred seventy-two".