20424522 has 8 divisors (see below), whose sum is σ = 40849056. Its totient is φ = 6808172.

The previous prime is 20424517. The next prime is 20424533. The reversal of 20424522 is 22542402.

It is a sphenic number, since it is the product of 3 distinct primes.

20424522 is an admirable number.

It is a super-2 number, since 2×20424522² = 834322197856968, which contains 22 as substring.

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, 1702038 + ... + 1702049.

It is an arithmetic number, because the mean of its divisors is an integer number (5106132).

Almost surely, 2^20424522 is an apocalyptic number.

20424522 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20424522 is a wasteful number, since it uses less digits than its factorization.

20424522 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3404092.

The product of its (nonzero) digits is 1280, while the sum is 21.

The square root of 20424522 is about 4519.3497319858. The cubic root of 20424522 is about 273.3488810642.

Adding to 20424522 its reverse (22542402), we get a palindrome (42966924).

The spelling of 20424522 in words is "twenty million, four hundred twenty-four thousand, five hundred twenty-two".