1980722 has 4 divisors (see below), whose sum is σ = 2971086. Its totient is φ = 990360.

The previous prime is 1980707. The next prime is 1980743. The reversal of 1980722 is 2270891.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1585081 + 395641 = 1259^2 + 629^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 495179 + ... + 495182.

2^1980722 is an apocalyptic number.

1980722 is a deficient number, since it is larger than the sum of its proper divisors (990364).

1980722 is an equidigital number, since it uses as much as digits as its factorization.

1980722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 990363.

The product of its (nonzero) digits is 2016, while the sum is 29.

The square root of 1980722 is about 1407.3812560923. The cubic root of 1980722 is about 125.5859846830.

The spelling of 1980722 in words is "one million, nine hundred eighty thousand, seven hundred twenty-two".