820220846 has 16 divisors (see below), whose sum is σ = 1252413888. Its totient is φ = 402796800.

The previous prime is 820220839. The next prime is 820220873. The reversal of 820220846 is 648022028.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23531 + ... + 46841.

It is an arithmetic number, because the mean of its divisors is an integer number (78275868).

Almost surely, 2^820220846 is an apocalyptic number.

820220846 is a deficient number, since it is larger than the sum of its proper divisors (432193042).

820220846 is a wasteful number, since it uses less digits than its factorization.

820220846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23627.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 820220846 is about 28639.4980053771. The cubic root of 820220846 is about 936.0741830982.

The spelling of 820220846 in words is "eight hundred twenty million, two hundred twenty thousand, eight hundred forty-six".