820163324 has 12 divisors (see below), whose sum is σ = 1450083264. Its totient is φ = 405853824.

The previous prime is 820163251. The next prime is 820163339. The reversal of 820163324 is 423361028.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1056524 + ... + 1057299.

It is an arithmetic number, because the mean of its divisors is an integer number (120840272).

Almost surely, 2^820163324 is an apocalyptic number.

It is an amenable number.

820163324 is a deficient number, since it is larger than the sum of its proper divisors (629919940).

820163324 is a wasteful number, since it uses less digits than its factorization.

820163324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113924 (or 2113922 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 820163324 is about 28638.4937453072. The cubic root of 820163324 is about 936.0523003259.

The spelling of 820163324 in words is "eight hundred twenty million, one hundred sixty-three thousand, three hundred twenty-four".