820784098 has 16 divisors (see below), whose sum is σ = 1269182520. Its totient is φ = 397806336.

The previous prime is 820784093. The next prime is 820784099. The reversal of 820784098 is 890487028.

820784098 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 643281769 + 177502329 = 25363^2 + 13323^2 .

It is not an unprimeable number, because it can be changed into a prime (820784093) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 711 + ... + 40522.

Almost surely, 2^820784098 is an apocalyptic number.

820784098 is a deficient number, since it is larger than the sum of its proper divisors (448398422).

820784098 is a wasteful number, since it uses less digits than its factorization.

820784098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41541.

The product of its (nonzero) digits is 258048, while the sum is 46.

The square root of 820784098 is about 28649.3298001890. The cubic root of 820784098 is about 936.2884038643.

The spelling of 820784098 in words is "eight hundred twenty million, seven hundred eighty-four thousand, ninety-eight".