820932890 has 32 divisors (see below), whose sum is σ = 1579258944. Its totient is φ = 306161920.

The previous prime is 820932881. The next prime is 820932911. The reversal of 820932890 is 98239028.

820932890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4376 + ... + 40755.

It is an arithmetic number, because the mean of its divisors is an integer number (49351842).

Almost surely, 2^820932890 is an apocalyptic number.

820932890 is a deficient number, since it is larger than the sum of its proper divisors (758326054).

820932890 is a wasteful number, since it uses less digits than its factorization.

820932890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45262.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 820932890 is about 28651.9264622817. The cubic root of 820932890 is about 936.3449773315.

The spelling of 820932890 in words is "eight hundred twenty million, nine hundred thirty-two thousand, eight hundred ninety".