1623172 has 12 divisors (see below), whose sum is σ = 2857680. Its totient is φ = 806696.

The previous prime is 1623169. The next prime is 1623173. The reversal of 1623172 is 2713261.

It is not an unprimeable number, because it can be changed into a prime (1623173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 418 + ... + 1849.

It is an arithmetic number, because the mean of its divisors is an integer number (238140).

2^1623172 is an apocalyptic number.

It is an amenable number.

1623172 is a deficient number, since it is larger than the sum of its proper divisors (1234508).

1623172 is a wasteful number, since it uses less digits than its factorization.

1623172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2450 (or 2448 counting only the distinct ones).

The product of its digits is 504, while the sum is 22.

The square root of 1623172 is about 1274.0376760520. The cubic root of 1623172 is about 117.5226333343.

The spelling of 1623172 in words is "one million, six hundred twenty-three thousand, one hundred seventy-two".