20320622 has 16 divisors (see below), whose sum is σ = 35777760. Its totient is φ = 8473248.

The previous prime is 20320609. The next prime is 20320669. The reversal of 20320622 is 22602302.

It is a self number, because there is not a number n which added to its sum of digits gives 20320622.

It is a congruent number.

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, 19097 + ... + 20132.

It is an arithmetic number, because the mean of its divisors is an integer number (2236110).

Almost surely, 2^20320622 is an apocalyptic number.

20320622 is a deficient number, since it is larger than the sum of its proper divisors (15457138).

20320622 is a wasteful number, since it uses less digits than its factorization.

20320622 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39275.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 20320622 is about 4507.8400592745. The cubic root of 20320622 is about 272.8845822495.

Adding to 20320622 its reverse (22602302), we get a palindrome (42922924).

The spelling of 20320622 in words is "twenty million, three hundred twenty thousand, six hundred twenty-two".