1722672 has 60 divisors (see below), whose sum is σ = 5513040. Its totient is φ = 491904.

The previous prime is 1722667. The next prime is 1722713. The reversal of 1722672 is 2762271.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 154 + ... + 1862.

It is an arithmetic number, because the mean of its divisors is an integer number (91884).

2^1722672 is an apocalyptic number.

1722672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1722672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2756520).

1722672 is an abundant number, since it is smaller than the sum of its proper divisors (3790368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1722672 is a wasteful number, since it uses less digits than its factorization.

1722672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730 (or 1721 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 1722672 is about 1312.5059999863. The cubic root of 1722672 is about 119.8765396898.

The spelling of 1722672 in words is "one million, seven hundred twenty-two thousand, six hundred seventy-two".