820923230 has 8 divisors (see below), whose sum is σ = 1477661832. Its totient is φ = 328369288.

The previous prime is 820923209. The next prime is 820923241. The reversal of 820923230 is 32329028.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 820923193 and 820923202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41046152 + ... + 41046171.

It is an arithmetic number, because the mean of its divisors is an integer number (184707729).

Almost surely, 2^820923230 is an apocalyptic number.

820923230 is a deficient number, since it is larger than the sum of its proper divisors (656738602).

820923230 is a wasteful number, since it uses less digits than its factorization.

820923230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82092330.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 820923230 is about 28651.7578867336. The cubic root of 820923230 is about 936.3413046285.

The spelling of 820923230 in words is "eight hundred twenty million, nine hundred twenty-three thousand, two hundred thirty".