820337904 has 30 divisors (see below), whose sum is σ = 2295807176. Its totient is φ = 273445920.

The previous prime is 820337897. The next prime is 820337923. The reversal of 820337904 is 409733028.

820337904 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×820337904² = 1345908553478226432, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2848252 + ... + 2848539.

Almost surely, 2^820337904 is an apocalyptic number.

It is an amenable number.

820337904 is an abundant number, since it is smaller than the sum of its proper divisors (1475469272).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

820337904 is a wasteful number, since it uses less digits than its factorization.

820337904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5696805 (or 5696796 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 820337904 is about 28641.5415786232. The cubic root of 820337904 is about 936.1187116582.

It can be divided in two parts, 820 and 337904, that added together give a square (338724 = 582²).

The spelling of 820337904 in words is "eight hundred twenty million, three hundred thirty-seven thousand, nine hundred four".