2166972 has 24 divisors (see below), whose sum is σ = 5115600. Its totient is φ = 713856.

The previous prime is 2166961. The next prime is 2166977. The reversal of 2166972 is 2796612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166977) 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, 54 + ... + 2082.

It is an arithmetic number, because the mean of its divisors is an integer number (213150).

2^2166972 is an apocalyptic number.

It is an amenable number.

2166972 is an abundant number, since it is smaller than the sum of its proper divisors (2948628).

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

2166972 is a wasteful number, since it uses less digits than its factorization.

2166972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2125 (or 2123 counting only the distinct ones).

The product of its digits is 9072, while the sum is 33.

The square root of 2166972 is about 1472.0638573105. The cubic root of 2166972 is about 129.4050127574.

The spelling of 2166972 in words is "two million, one hundred sixty-six thousand, nine hundred seventy-two".