1890722 has 8 divisors (see below), whose sum is σ = 2889756. Its totient is φ = 927472.

The previous prime is 1890719. The next prime is 1890731. The reversal of 1890722 is 2270981.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 1713481 + 177241 = 1309^2 + 421^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 8813 + ... + 9024.

2^1890722 is an apocalyptic number.

1890722 is a deficient number, since it is larger than the sum of its proper divisors (999034).

1890722 is a wasteful number, since it uses less digits than its factorization.

1890722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17892.

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

The square root of 1890722 is about 1375.0352722749. The cubic root of 1890722 is about 123.6543007359.

The spelling of 1890722 in words is "one million, eight hundred ninety thousand, seven hundred twenty-two".