20024004 has 96 divisors (see below), whose sum is σ = 62770176. Its totient is φ = 4798080.

The previous prime is 20023987. The next prime is 20024009. The reversal of 20024004 is 40042002.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (20024009) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11179 + ... + 12845.

It is an arithmetic number, because the mean of its divisors is an integer number (653856).

Almost surely, 2^20024004 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 20024004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31385088).

20024004 is an abundant number, since it is smaller than the sum of its proper divisors (42746172).

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

20024004 is a wasteful number, since it uses less digits than its factorization.

20024004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1705 (or 1703 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20024004 is about 4474.8188790162. The cubic root of 20024004 is about 271.5503130441.

Adding to 20024004 its reverse (40042002), we get a palindrome (60066006).

It can be divided in two parts, 2002 and 4004, that added together give a palindrome (6006).

The spelling of 20024004 in words is "twenty million, twenty-four thousand, four".