320820036 has 48 divisors (see below), whose sum is σ = 761432448. Its totient is φ = 105120000.

The previous prime is 320820029. The next prime is 320820037. The reversal of 320820036 is 630028023.

It is a junction number, because it is equal to n+sod(n) for n = 320819988 and 320820015.

It is not an unprimeable number, because it can be changed into a prime (320820037) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182136 + ... + 183888.

It is an arithmetic number, because the mean of its divisors is an integer number (15863176).

Almost surely, 2^320820036 is an apocalyptic number.

It is an amenable number.

320820036 is an abundant number, since it is smaller than the sum of its proper divisors (440612412).

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

320820036 is a wasteful number, since it uses less digits than its factorization.

320820036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2012 (or 2010 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 320820036 is about 17911.4498575632. The cubic root of 320820036 is about 684.5741477277.

Adding to 320820036 its reverse (630028023), we get a palindrome (950848059).

The spelling of 320820036 in words is "three hundred twenty million, eight hundred twenty thousand, thirty-six".