2166744 has 16 divisors (see below), whose sum is σ = 5416920. Its totient is φ = 722240.

The previous prime is 2166721. The next prime is 2166763. The reversal of 2166744 is 4476612.

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45117 + ... + 45164.

2^2166744 is an apocalyptic number.

2166744 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2166744 is an abundant number, since it is smaller than the sum of its proper divisors (3250176).

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

2166744 is a wasteful number, since it uses less digits than its factorization.

2166744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90290 (or 90286 counting only the distinct ones).

The product of its digits is 8064, while the sum is 30.

The square root of 2166744 is about 1471.9864129808. The cubic root of 2166744 is about 129.4004741082.

The spelling of 2166744 in words is "two million, one hundred sixty-six thousand, seven hundred forty-four".