20622305 has 16 divisors (see below), whose sum is σ = 27381888. Its totient is φ = 14784000.

The previous prime is 20622299. The next prime is 20622311. The reversal of 20622305 is 50322602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20622299) and next prime (20622311).

It is not a de Polignac number, because 20622305 - 2⁴ = 20622289 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1265 + ... + 6545.

It is an arithmetic number, because the mean of its divisors is an integer number (1711368).

Almost surely, 2^20622305 is an apocalyptic number.

It is an amenable number.

20622305 is a deficient number, since it is larger than the sum of its proper divisors (6759583).

20622305 is a wasteful number, since it uses less digits than its factorization.

20622305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 20622305 is about 4541.1788117184. The cubic root of 20622305 is about 274.2283824115.

Adding to 20622305 its reverse (50322602), we get a palindrome (70944907).

The spelling of 20622305 in words is "twenty million, six hundred twenty-two thousand, three hundred five".