2945772 has 36 divisors (see below), whose sum is σ = 7609056. Its totient is φ = 960480.

The previous prime is 2945749. The next prime is 2945773. The reversal of 2945772 is 2775492.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an Ulam number.

It is a d-powerful number, because it can be written as 2¹³ + 9 + 4³ + 5 + 7⁵ + 7⁷ + 2²¹ .

It is not an unprimeable number, because it can be changed into a prime (2945773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 822 + ... + 2562.

2^2945772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2945772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3804528).

2945772 is an abundant number, since it is smaller than the sum of its proper divisors (4663284).

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

2945772 is a wasteful number, since it uses less digits than its factorization.

2945772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1798 (or 1793 counting only the distinct ones).

The product of its digits is 35280, while the sum is 36.

The square root of 2945772 is about 1716.3251440214. The cubic root of 2945772 is about 143.3506643307.

The spelling of 2945772 in words is "two million, nine hundred forty-five thousand, seven hundred seventy-two".