20002404400 has 60 divisors (see below), whose sum is σ = 52424495064. Its totient is φ = 7273600000.

The previous prime is 20002404397. The next prime is 20002404419. The reversal of 20002404400 is 440420002.

It is a super-2 number, since 2×20002404400² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 2268601 + ... + 2277400.

Almost surely, 2^20002404400 is an apocalyptic number.

20002404400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20002404400 is an abundant number, since it is smaller than the sum of its proper divisors (32422090664).

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

20002404400 is a wasteful number, since it uses less digits than its factorization.

20002404400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4546030 (or 4546019 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20002404400 its reverse (440420002), we get a palindrome (20442824402).

The spelling of 20002404400 in words is "twenty billion, two million, four hundred four thousand, four hundred".