813790282 has 4 divisors (see below), whose sum is σ = 1220685426. Its totient is φ = 406895140.

The previous prime is 813790261. The next prime is 813790291. The reversal of 813790282 is 282097318.

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., 533194281 + 280596001 = 23091^2 + 16751^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 203447569 + ... + 203447572.

Almost surely, 2^813790282 is an apocalyptic number.

813790282 is a deficient number, since it is larger than the sum of its proper divisors (406895144).

813790282 is a wasteful number, since it uses less digits than its factorization.

813790282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406895143.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 813790282 is about 28527.0096925703. The cubic root of 813790282 is about 933.6214758586.

The spelling of 813790282 in words is "eight hundred thirteen million, seven hundred ninety thousand, two hundred eighty-two".