1972722 has 8 divisors (see below), whose sum is σ = 3945456. Its totient is φ = 657572.

The previous prime is 1972721. The next prime is 1972739. The reversal of 1972722 is 2272791.

It is a happy number.

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

1972722 is an admirable number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1972722.

It is not an unprimeable number, because it can be changed into a prime (1972721) 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, 164388 + ... + 164399.

It is an arithmetic number, because the mean of its divisors is an integer number (493182).

2^1972722 is an apocalyptic number.

1972722 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.

1972722 is a wasteful number, since it uses less digits than its factorization.

1972722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 328792.

The product of its digits is 3528, while the sum is 30.

The square root of 1972722 is about 1404.5362223880. The cubic root of 1972722 is about 125.4166788201.

The spelling of 1972722 in words is "one million, nine hundred seventy-two thousand, seven hundred twenty-two".