1791396 has 72 divisors (see below), whose sum is σ = 4994080. Its totient is φ = 559872.

The previous prime is 1791371. The next prime is 1791403. The reversal of 1791396 is 6931971.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1791396.

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 23 ways as a sum of consecutive naturals, for example, 18420 + ... + 18516.

2^1791396 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1791396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2497040).

1791396 is an abundant number, since it is smaller than the sum of its proper divisors (3202684).

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

1791396 is a wasteful number, since it uses less digits than its factorization.

1791396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135 (or 121 counting only the distinct ones).

The product of its digits is 10206, while the sum is 36.

The square root of 1791396 is about 1338.4304240415. The cubic root of 1791396 is about 121.4499107661.

It can be divided in two parts, 1791 and 396, that added together give a 7-th power (2187 = 3⁷).

The spelling of 1791396 in words is "one million, seven hundred ninety-one thousand, three hundred ninety-six".