1993356 has 24 divisors (see below), whose sum is σ = 5168240. Its totient is φ = 664416.

The previous prime is 1993349. The next prime is 1993357. The reversal of 1993356 is 6533991.

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 1993356.

It is not an unprimeable number, because it can be changed into a prime (1993357) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 9121 + ... + 9336.

2^1993356 is an apocalyptic number.

It is an amenable number.

1993356 is an abundant number, since it is smaller than the sum of its proper divisors (3174884).

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

1993356 is a wasteful number, since it uses less digits than its factorization.

1993356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18470 (or 18462 counting only the distinct ones).

The product of its digits is 21870, while the sum is 36.

The square root of 1993356 is about 1411.8625995471. The cubic root of 1993356 is about 125.8524349562.

The spelling of 1993356 in words is "one million, nine hundred ninety-three thousand, three hundred fifty-six".