2118772 has 6 divisors (see below), whose sum is σ = 3707858. Its totient is φ = 1059384.

The previous prime is 2118751. The next prime is 2118791. The reversal of 2118772 is 2778112.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 763876 = 1164^2 + 874^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2118772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 264843 + ... + 264850.

2^2118772 is an apocalyptic number.

It is an amenable number.

2118772 is a deficient number, since it is larger than the sum of its proper divisors (1589086).

2118772 is a wasteful number, since it uses less digits than its factorization.

2118772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 529697 (or 529695 counting only the distinct ones).

The product of its digits is 1568, while the sum is 28.

The square root of 2118772 is about 1455.6002198406. The cubic root of 2118772 is about 128.4383570863.

The spelling of 2118772 in words is "two million, one hundred eighteen thousand, seven hundred seventy-two".