20822424 has 64 divisors (see below), whose sum is σ = 60963840. Its totient is φ = 5802240.

The previous prime is 20822419. The next prime is 20822437. The reversal of 20822424 is 42422802.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20822394 and 20822403.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5377 + ... + 8399.

It is an arithmetic number, because the mean of its divisors is an integer number (952560).

Almost surely, 2^20822424 is an apocalyptic number.

20822424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20822424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30481920).

20822424 is an abundant number, since it is smaller than the sum of its proper divisors (40141416).

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

20822424 is a wasteful number, since it uses less digits than its factorization.

20822424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3080 (or 3076 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 24.

The square root of 20822424 is about 4563.1594317972. The cubic root of 20822424 is about 275.1125665887.

The spelling of 20822424 in words is "twenty million, eight hundred twenty-two thousand, four hundred twenty-four".