1722196 has 12 divisors (see below), whose sum is σ = 3444448. Its totient is φ = 738072.

The previous prime is 1722191. The next prime is 1722199. The reversal of 1722196 is 6912271.

It is a happy number.

1722196 is nontrivially palindromic in base 3.

1722196 is an admirable number.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (28), and also a Moran number because the ratio is a prime number: 61507 = 1722196 / (1 + 7 + 2 + 2 + 1 + 9 + 6).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1722191) 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, 30726 + ... + 30781.

2^1722196 is an apocalyptic number.

It is an amenable number.

1722196 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1722196 is a wasteful number, since it uses less digits than its factorization.

1722196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61518 (or 61516 counting only the distinct ones).

The product of its digits is 1512, while the sum is 28.

The square root of 1722196 is about 1312.3246549539. The cubic root of 1722196 is about 119.8654974467.

It can be divided in two parts, 172219 and 6, that added together give a square (172225 = 415²).

The spelling of 1722196 in words is "one million, seven hundred twenty-two thousand, one hundred ninety-six".