320210040 has 64 divisors (see below), whose sum is σ = 1011196800. Its totient is φ = 80894592.

The previous prime is 320210039. The next prime is 320210081. The reversal of 320210040 is 40012023.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 320209998 and 320210025.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67942 + ... + 72501.

It is an arithmetic number, because the mean of its divisors is an integer number (15799950).

Almost surely, 2^320210040 is an apocalyptic number.

320210040 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320210040 is an abundant number, since it is smaller than the sum of its proper divisors (690986760).

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

320210040 is a wasteful number, since it uses less digits than its factorization.

320210040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140476 (or 140472 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 320210040 is about 17894.4136534283. The cubic root of 320210040 is about 684.1399973351.

Adding to 320210040 its reverse (40012023), we get a palindrome (360222063).

The spelling of 320210040 in words is "three hundred twenty million, two hundred ten thousand, forty".