20418024 has 96 divisors (see below), whose sum is σ = 57456000. Its totient is φ = 6040320.

The previous prime is 20418011. The next prime is 20418031. The reversal of 20418024 is 42081402.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229372 + ... + 229460.

It is an arithmetic number, because the mean of its divisors is an integer number (598500).

Almost surely, 2^20418024 is an apocalyptic number.

20418024 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 20418024, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28728000).

20418024 is an abundant number, since it is smaller than the sum of its proper divisors (37037976).

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

20418024 is a wasteful number, since it uses less digits than its factorization.

20418024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 21.

The square root of 20418024 is about 4518.6307660618. The cubic root of 20418024 is about 273.3198896157.

Adding to 20418024 its reverse (42081402), we get a palindrome (62499426).

The spelling of 20418024 in words is "twenty million, four hundred eighteen thousand, twenty-four".