2164572 has 18 divisors (see below), whose sum is σ = 5471648. Its totient is φ = 721512.

The previous prime is 2164571. The next prime is 2164583. The reversal of 2164572 is 2754612.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2164571) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30028 + ... + 30099.

2^2164572 is an apocalyptic number.

It is an amenable number.

2164572 is an abundant number, since it is smaller than the sum of its proper divisors (3307076).

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

2164572 is a wasteful number, since it uses less digits than its factorization.

2164572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60137 (or 60132 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 2164572 is about 1471.2484494469. The cubic root of 2164572 is about 129.3572215296.

The spelling of 2164572 in words is "two million, one hundred sixty-four thousand, five hundred seventy-two".