20041005424 has 160 divisors (see below), whose sum is σ = 45613098432. Its totient is φ = 8499814400.

The previous prime is 20041005419. The next prime is 20041005431. The reversal of 20041005424 is 42450014002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 20041005395 and 20041005404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 71320164 + ... + 71320444.

Almost surely, 2^20041005424 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 20041005424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22806549216).

20041005424 is an abundant number, since it is smaller than the sum of its proper divisors (25572093008).

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

20041005424 is a wasteful number, since it uses less digits than its factorization.

20041005424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

Adding to 20041005424 its reverse (42450014002), we get a palindrome (62491019426).

The spelling of 20041005424 in words is "twenty billion, forty-one million, five thousand, four hundred twenty-four".