2172832 has 12 divisors (see below), whose sum is σ = 4277826. Its totient is φ = 1086400.

The previous prime is 2172829. The next prime is 2172839. The reversal of 2172832 is 2382712.

It can be written as a sum of positive squares in only one way, i.e., 1648656 + 524176 = 1284^2 + 724^2 .

It is a hoax number, since the sum of its digits (25) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 2172797 and 2172806.

It is not an unprimeable number, because it can be changed into a prime (2172839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33919 + ... + 33982.

2^2172832 is an apocalyptic number.

It is an amenable number.

2172832 is a deficient number, since it is larger than the sum of its proper divisors (2104994).

2172832 is an equidigital number, since it uses as much as digits as its factorization.

2172832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67911 (or 67903 counting only the distinct ones).

The product of its digits is 1344, while the sum is 25.

The square root of 2172832 is about 1474.0529162822. The cubic root of 2172832 is about 129.5215549259.

The spelling of 2172832 in words is "two million, one hundred seventy-two thousand, eight hundred thirty-two".