2172394 has 8 divisors (see below), whose sum is σ = 3724128. Its totient is φ = 931020.

The previous prime is 2172389. The next prime is 2172397. The reversal of 2172394 is 4932712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (2172397) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 77572 + ... + 77599.

It is an arithmetic number, because the mean of its divisors is an integer number (465516).

2^2172394 is an apocalyptic number.

2172394 is a deficient number, since it is larger than the sum of its proper divisors (1551734).

2172394 is a wasteful number, since it uses less digits than its factorization.

2172394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155180.

The product of its digits is 3024, while the sum is 28.

The square root of 2172394 is about 1473.9043388226. The cubic root of 2172394 is about 129.5128513456.

The spelling of 2172394 in words is "two million, one hundred seventy-two thousand, three hundred ninety-four".