20622771 has 24 divisors (see below), whose sum is σ = 33771920. Its totient is φ = 12021696.

The previous prime is 20622737. The next prime is 20622773. The reversal of 20622771 is 17722602.

It is not a de Polignac number, because 20622771 - 2¹³ = 20614579 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20622773) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2416 + ... + 6861.

Almost surely, 2^20622771 is an apocalyptic number.

20622771 is a deficient number, since it is larger than the sum of its proper divisors (13149149).

20622771 is a wasteful number, since it uses less digits than its factorization.

20622771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9315 (or 9312 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 20622771 is about 4541.2301196922. The cubic root of 20622771 is about 274.2304479657.

The spelling of 20622771 in words is "twenty million, six hundred twenty-two thousand, seven hundred seventy-one".