2161432 has 32 divisors (see below), whose sum is σ = 4989600. Its totient is φ = 854784.

The previous prime is 2161427. The next prime is 2161433. The reversal of 2161432 is 2341612.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161433) 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, 757 + ... + 2212.

It is an arithmetic number, because the mean of its divisors is an integer number (155925).

2^2161432 is an apocalyptic number.

It is an amenable number.

2161432 is an abundant number, since it is smaller than the sum of its proper divisors (2828168).

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

2161432 is a wasteful number, since it uses less digits than its factorization.

2161432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2995 (or 2991 counting only the distinct ones).

The product of its digits is 288, while the sum is 19.

The square root of 2161432 is about 1470.1809412450. The cubic root of 2161432 is about 129.2946412996.

The spelling of 2161432 in words is "two million, one hundred sixty-one thousand, four hundred thirty-two".