1722146 has 8 divisors (see below), whose sum is σ = 2596800. Its totient is φ = 856548.

The previous prime is 1722137. The next prime is 1722163. The reversal of 1722146 is 6412271.

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

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, 1766 + ... + 2561.

It is an arithmetic number, because the mean of its divisors is an integer number (324600).

2^1722146 is an apocalyptic number.

1722146 is a deficient number, since it is larger than the sum of its proper divisors (874654).

1722146 is a wasteful number, since it uses less digits than its factorization.

1722146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4528.

The product of its digits is 672, while the sum is 23.

The square root of 1722146 is about 1312.3056046516. The cubic root of 1722146 is about 119.8643374291.

The spelling of 1722146 in words is "one million, seven hundred twenty-two thousand, one hundred forty-six".