20024420004 has 36 divisors (see below), whose sum is σ = 50694858396. Its totient is φ = 6664577088.

The previous prime is 20024419999. The next prime is 20024420021. The reversal of 20024420004 is 40002442002.

It can be written as a sum of positive squares in 2 ways, for example, as 2130007104 + 17894412900 = 46152^2 + 133770^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 402399 + ... + 449414.

It is an arithmetic number, because the mean of its divisors is an integer number (1408190511).

Almost surely, 2^20024420004 is an apocalyptic number.

It is an amenable number.

20024420004 is an abundant number, since it is smaller than the sum of its proper divisors (30670438392).

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

20024420004 is a wasteful number, since it uses less digits than its factorization.

20024420004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 852476 (or 852471 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 20024420004 its reverse (40002442002), we get a palindrome (60026862006).

The spelling of 20024420004 in words is "twenty billion, twenty-four million, four hundred twenty thousand, four".