20320322 has 16 divisors (see below), whose sum is σ = 33480000. Its totient is φ = 9173040.

The previous prime is 20320303. The next prime is 20320343. The reversal of 20320322 is 22302302.

It is a junction number, because it is equal to n+sod(n) for n = 20320297 and 20320306.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179 + ... + 6377.

It is an arithmetic number, because the mean of its divisors is an integer number (2092500).

Almost surely, 2^20320322 is an apocalyptic number.

20320322 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20320322 is a deficient number, since it is larger than the sum of its proper divisors (13159678).

20320322 is a wasteful number, since it uses less digits than its factorization.

20320322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20320322 is about 4507.8067837919. The cubic root of 20320322 is about 272.8832393481.

Adding to 20320322 its reverse (22302302), we get a palindrome (42622624).

The spelling of 20320322 in words is "twenty million, three hundred twenty thousand, three hundred twenty-two".