2772189 has 24 divisors (see below), whose sum is σ = 4642560. Its totient is φ = 1561248.

The previous prime is 2772179. The next prime is 2772191. The reversal of 2772189 is 9812772.

It is not a de Polignac number, because 2772189 - 2⁷ = 2772061 is a prime.

2772189 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2772179) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4699 + ... + 5255.

It is an arithmetic number, because the mean of its divisors is an integer number (193440).

2^2772189 is an apocalyptic number.

It is an amenable number.

2772189 is a deficient number, since it is larger than the sum of its proper divisors (1870371).

2772189 is a wasteful number, since it uses less digits than its factorization.

2772189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649 (or 646 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 2772189 is about 1664.9891891541. The cubic root of 2772189 is about 140.4777724322.

Adding to 2772189 its sum of digits (36), we get a square (2772225 = 1665²).

The spelling of 2772189 in words is "two million, seven hundred seventy-two thousand, one hundred eighty-nine".