20124324 has 72 divisors (see below), whose sum is σ = 56216160. Its totient is φ = 6019200.

The previous prime is 20124323. The next prime is 20124329. The reversal of 20124324 is 42342102.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 20124297 and 20124306.

It is not an unprimeable number, because it can be changed into a prime (20124323) 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, 34959 + ... + 35529.

It is an arithmetic number, because the mean of its divisors is an integer number (780780).

Almost surely, 2^20124324 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20124324, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28108080).

20124324 is an abundant number, since it is smaller than the sum of its proper divisors (36091836).

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

20124324 is a wasteful number, since it uses less digits than its factorization.

20124324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 676 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 20124324 is about 4486.0142665845. The cubic root of 20124324 is about 272.0030456695.

Adding to 20124324 its reverse (42342102), we get a palindrome (62466426).

It can be divided in two parts, 2012 and 4324, that added together give a palindrome (6336).

The spelling of 20124324 in words is "twenty million, one hundred twenty-four thousand, three hundred twenty-four".