821347796 has 12 divisors (see below), whose sum is σ = 1437576000. Its totient is φ = 410611800.

The previous prime is 821347783. The next prime is 821347799. The reversal of 821347796 is 697743128.

821347796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×821347796² = 1349224403988115232, which contains 22 as substring.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 821347796.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821347799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27455 + ... + 48953.

It is an arithmetic number, because the mean of its divisors is an integer number (119798000).

Almost surely, 2^821347796 is an apocalyptic number.

It is an amenable number.

821347796 is a deficient number, since it is larger than the sum of its proper divisors (616228204).

821347796 is a wasteful number, since it uses less digits than its factorization.

821347796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31054 (or 31052 counting only the distinct ones).

The product of its digits is 508032, while the sum is 47.

The square root of 821347796 is about 28659.1660032179. The cubic root of 821347796 is about 936.5026961588.

The spelling of 821347796 in words is "eight hundred twenty-one million, three hundred forty-seven thousand, seven hundred ninety-six".