20622924 has 108 divisors (see below), whose sum is σ = 63032424. Its totient is φ = 5878656.

The previous prime is 20622911. The next prime is 20622977. The reversal of 20622924 is 42922602.

It is a tau number, because it is divible by the number of its divisors (108).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 47412 + ... + 47844.

Almost surely, 2^20622924 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20622924, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31516212).

20622924 is an abundant number, since it is smaller than the sum of its proper divisors (42409500).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20622924 is a wasteful number, since it uses less digits than its factorization.

20622924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 466 (or 445 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 20622924 is about 4541.2469653169. The cubic root of 20622924 is about 274.2311261344.

The spelling of 20622924 in words is "twenty million, six hundred twenty-two thousand, nine hundred twenty-four".