20436024 has 64 divisors (see below), whose sum is σ = 59005440. Its totient is φ = 5777280.

The previous prime is 20436019. The next prime is 20436041. The reversal of 20436024 is 42063402.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 16714 + ... + 17894.

It is an arithmetic number, because the mean of its divisors is an integer number (921960).

Almost surely, 2^20436024 is an apocalyptic number.

20436024 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 20436024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29502720).

20436024 is an abundant number, since it is smaller than the sum of its proper divisors (38569416).

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

20436024 is a wasteful number, since it uses less digits than its factorization.

20436024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1300 (or 1296 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 20436024 is about 4520.6220810857. The cubic root of 20436024 is about 273.4001832656.

Adding to 20436024 its reverse (42063402), we get a palindrome (62499426).

The spelling of 20436024 in words is "twenty million, four hundred thirty-six thousand, twenty-four".