1996738 has 8 divisors (see below), whose sum is σ = 3003660. Its totient is φ = 995520.

The previous prime is 1996723. The next prime is 1996739. The reversal of 1996738 is 8376991.

It can be written as a sum of positive squares in 2 ways, for example, as 1996569 + 169 = 1413^2 + 13^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 1996694 and 1996703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1996739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 403 + ... + 2038.

2^1996738 is an apocalyptic number.

1996738 is a deficient number, since it is larger than the sum of its proper divisors (1006922).

1996738 is a wasteful number, since it uses less digits than its factorization.

1996738 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2852.

The product of its digits is 81648, while the sum is 43.

The square root of 1996738 is about 1413.0598005746. The cubic root of 1996738 is about 125.9235700080.

The spelling of 1996738 in words is "one million, nine hundred ninety-six thousand, seven hundred thirty-eight".