1672172 has 6 divisors (see below), whose sum is σ = 2926308. Its totient is φ = 836084.

The previous prime is 1672129. The next prime is 1672199. The reversal of 1672172 is 2712761.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 209018 + ... + 209025.

It is an arithmetic number, because the mean of its divisors is an integer number (487718).

2^1672172 is an apocalyptic number.

It is an amenable number.

1672172 is a deficient number, since it is larger than the sum of its proper divisors (1254136).

1672172 is a wasteful number, since it uses less digits than its factorization.

1672172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418047 (or 418045 counting only the distinct ones).

The product of its digits is 1176, while the sum is 26.

The square root of 1672172 is about 1293.1248972934. The cubic root of 1672172 is about 118.6935125616.

The spelling of 1672172 in words is "one million, six hundred seventy-two thousand, one hundred seventy-two".