20422624 has 24 divisors (see below), whose sum is σ = 40355280. Its totient is φ = 10173696.

The previous prime is 20422613. The next prime is 20422637. The reversal of 20422624 is 42622402.

It is a junction number, because it is equal to n+sod(n) for n = 20422595 and 20422604.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8997 + ... + 11035.

It is an arithmetic number, because the mean of its divisors is an integer number (1681470).

Almost surely, 2^20422624 is an apocalyptic number.

It is an amenable number.

20422624 is a deficient number, since it is larger than the sum of its proper divisors (19932656).

20422624 is a wasteful number, since it uses less digits than its factorization.

20422624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2362 (or 2354 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 20422624 is about 4519.1397411454. The cubic root of 20422624 is about 273.3404135915.

The spelling of 20422624 in words is "twenty million, four hundred twenty-two thousand, six hundred twenty-four".