20622844 has 24 divisors (see below), whose sum is σ = 39852288. Its totient is φ = 9259440.

The previous prime is 20622841. The next prime is 20622851. The reversal of 20622844 is 44822602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20622841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 829 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (1660512).

Almost surely, 2^20622844 is an apocalyptic number.

It is an amenable number.

20622844 is a deficient number, since it is larger than the sum of its proper divisors (19229444).

20622844 is a wasteful number, since it uses less digits than its factorization.

20622844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5745 (or 5743 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 20622844 is about 4541.2381571549. The cubic root of 20622844 is about 274.2307715368.

The spelling of 20622844 in words is "twenty million, six hundred twenty-two thousand, eight hundred forty-four".