20622772 has 12 divisors (see below), whose sum is σ = 36129856. Its totient is φ = 10299960.

The previous prime is 20622737. The next prime is 20622773. The reversal of 20622772 is 27722602.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20622772.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 2197 + ... + 6787.

Almost surely, 2^20622772 is an apocalyptic number.

It is an amenable number.

20622772 is a deficient number, since it is larger than the sum of its proper divisors (15507084).

20622772 is a wasteful number, since it uses less digits than its factorization.

20622772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5718 (or 5716 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 20622772 is about 4541.2302297946. The cubic root of 20622772 is about 274.2304523982.

The spelling of 20622772 in words is "twenty million, six hundred twenty-two thousand, seven hundred seventy-two".