20404201424 has 40 divisors (see below), whose sum is σ = 40228466880. Its totient is φ = 10024178688.

The previous prime is 20404201423. The next prime is 20404201451. The reversal of 20404201424 is 42410240402.

It is a self number, because there is not a number n which added to its sum of digits gives 20404201424.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20404201423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 168437 + ... + 263019.

It is an arithmetic number, because the mean of its divisors is an integer number (1005711672).

Almost surely, 2^20404201424 is an apocalyptic number.

It is an amenable number.

20404201424 is a deficient number, since it is larger than the sum of its proper divisors (19824265456).

20404201424 is a wasteful number, since it uses less digits than its factorization.

20404201424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94827 (or 94821 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 23.

Adding to 20404201424 its reverse (42410240402), we get a palindrome (62814441826).

The spelling of 20404201424 in words is "twenty billion, four hundred four million, two hundred one thousand, four hundred twenty-four".