20622355 has 8 divisors (see below), whose sum is σ = 26650512. Its totient is φ = 15228768.

The previous prime is 20622341. The next prime is 20622361. The reversal of 20622355 is 55322602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20622355 - 2⁵ = 20622323 is a prime.

It is a Duffinian 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, 158569 + ... + 158698.

It is an arithmetic number, because the mean of its divisors is an integer number (3331314).

Almost surely, 2^20622355 is an apocalyptic number.

20622355 is a deficient number, since it is larger than the sum of its proper divisors (6028157).

20622355 is a wasteful number, since it uses less digits than its factorization.

20622355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 317285.

The product of its (nonzero) digits is 3600, while the sum is 25.

The square root of 20622355 is about 4541.1843168936. The cubic root of 20622355 is about 274.2286040390.

Adding to 20622355 its reverse (55322602), we get a palindrome (75944957).

The spelling of 20622355 in words is "twenty million, six hundred twenty-two thousand, three hundred fifty-five".