2189432 has 16 divisors (see below), whose sum is σ = 4691760. Its totient is φ = 938304.

The previous prime is 2189419. The next prime is 2189459. The reversal of 2189432 is 2349812.

It is a super-2 number, since 2×2189432² = 9587224965248, which contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 2189395 and 2189404.

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, 19493 + ... + 19604.

It is an arithmetic number, because the mean of its divisors is an integer number (293235).

2^2189432 is an apocalyptic number.

It is an amenable number.

2189432 is an abundant number, since it is smaller than the sum of its proper divisors (2502328).

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

2189432 is a wasteful number, since it uses less digits than its factorization.

2189432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39110 (or 39106 counting only the distinct ones).

The product of its digits is 3456, while the sum is 29.

The square root of 2189432 is about 1479.6729368344. The cubic root of 2189432 is about 129.8505580574.

The spelling of 2189432 in words is "two million, one hundred eighty-nine thousand, four hundred thirty-two".