320400022 has 8 divisors (see below), whose sum is σ = 481434696. Its totient is φ = 159921792.

The previous prime is 320400019. The next prime is 320400043. The reversal of 320400022 is 220004023.

320400022 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 = 320399975 and 320400011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137668 + ... + 139975.

It is an arithmetic number, because the mean of its divisors is an integer number (60179337).

Almost surely, 2^320400022 is an apocalyptic number.

320400022 is a deficient number, since it is larger than the sum of its proper divisors (161034674).

320400022 is a wasteful number, since it uses less digits than its factorization.

320400022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278222.

The product of its (nonzero) digits is 96, while the sum is 13.

The square root of 320400022 is about 17899.7212827463. The cubic root of 320400022 is about 684.2752716576.

Adding to 320400022 its reverse (220004023), we get a palindrome (540404045).

The spelling of 320400022 in words is "three hundred twenty million, four hundred thousand, twenty-two".