820903372 has 12 divisors (see below), whose sum is σ = 1437208416. Its totient is φ = 410272400.

The previous prime is 820903367. The next prime is 820903381. The reversal of 820903372 is 273309028.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34243 + ... + 53050.

It is an arithmetic number, because the mean of its divisors is an integer number (119767368).

Almost surely, 2^820903372 is an apocalyptic number.

It is an amenable number.

820903372 is a deficient number, since it is larger than the sum of its proper divisors (616305044).

820903372 is a wasteful number, since it uses less digits than its factorization.

820903372 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89648 (or 89646 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 820903372 is about 28651.4113439460. The cubic root of 820903372 is about 936.3337545862. Note that the first 3 decimals are identical.

The spelling of 820903372 in words is "eight hundred twenty million, nine hundred three thousand, three hundred seventy-two".