2166672 has 20 divisors (see below), whose sum is σ = 5597360. Its totient is φ = 722208.

The previous prime is 2166629. The next prime is 2166673. The reversal of 2166672 is 2766612.

It is not an unprimeable number, because it can be changed into a prime (2166673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22522 + ... + 22617.

It is an arithmetic number, because the mean of its divisors is an integer number (279868).

2^2166672 is an apocalyptic number.

It is an amenable number.

2166672 is an abundant number, since it is smaller than the sum of its proper divisors (3430688).

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

2166672 is a wasteful number, since it uses less digits than its factorization.

2166672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45150 (or 45144 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 2166672 is about 1471.9619560301. The cubic root of 2166672 is about 129.3990407843.

It can be divided in two parts, 216667 and 2, that multiplied together give a palindrome (433334).

The spelling of 2166672 in words is "two million, one hundred sixty-six thousand, six hundred seventy-two".