1722132 has 18 divisors (see below), whose sum is σ = 4353258. Its totient is φ = 574032.

The previous prime is 1722131. The next prime is 1722137. The reversal of 1722132 is 2312271.

It can be written as a sum of positive squares in only one way, i.e., 1354896 + 367236 = 1164^2 + 606^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23883 + ... + 23954.

2^1722132 is an apocalyptic number.

1722132 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1722132 is an abundant number, since it is smaller than the sum of its proper divisors (2631126).

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

1722132 is a wasteful number, since it uses less digits than its factorization.

1722132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47847 (or 47842 counting only the distinct ones).

The product of its digits is 168, while the sum is 18.

The square root of 1722132 is about 1312.3002705174. The cubic root of 1722132 is about 119.8640126201.

It can be divided in two parts, 172 and 2132, that added together give a square (2304 = 48²).

The spelling of 1722132 in words is "one million, seven hundred twenty-two thousand, one hundred thirty-two".