20196624 has 120 divisors (see below), whose sum is σ = 62876928. Its totient is φ = 5564160.

The previous prime is 20196623. The next prime is 20196647. The reversal of 20196624 is 42669102.

It is a junction number, because it is equal to n+sod(n) for n = 20196591 and 20196600.

It is not an unprimeable number, because it can be changed into a prime (20196623) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72774 + ... + 73050.

Almost surely, 2^20196624 is an apocalyptic number.

20196624 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 20196624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31438464).

20196624 is an abundant number, since it is smaller than the sum of its proper divisors (42680304).

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

20196624 is a wasteful number, since it uses less digits than its factorization.

20196624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 20196624 is about 4494.0654200846. The cubic root of 20196624 is about 272.3283951682.

The spelling of 20196624 in words is "twenty million, one hundred ninety-six thousand, six hundred twenty-four".