2772789 has 8 divisors (see below), whose sum is σ = 3787392. Its totient is φ = 1803360.

The previous prime is 2772767. The next prime is 2772827. The reversal of 2772789 is 9872772.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2772789 - 2⁸ = 2772533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2772789.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11149 + ... + 11394.

It is an arithmetic number, because the mean of its divisors is an integer number (473424).

2^2772789 is an apocalyptic number.

It is an amenable number.

2772789 is a deficient number, since it is larger than the sum of its proper divisors (1014603).

2772789 is a wasteful number, since it uses less digits than its factorization.

2772789 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22587.

The product of its digits is 98784, while the sum is 42.

The square root of 2772789 is about 1665.1693607558. The cubic root of 2772789 is about 140.4879064915.

The spelling of 2772789 in words is "two million, seven hundred seventy-two thousand, seven hundred eighty-nine".