20400014432 has 24 divisors (see below), whose sum is σ = 45900032976. Its totient is φ = 8742863232.

The previous prime is 20400014429. The next prime is 20400014443. The reversal of 20400014432 is 23441000402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 45535523 + ... + 45535970.

It is an arithmetic number, because the mean of its divisors is an integer number (1912501374).

Almost surely, 2^20400014432 is an apocalyptic number.

It is an amenable number.

20400014432 is an abundant number, since it is smaller than the sum of its proper divisors (25500018544).

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

20400014432 is an equidigital number, since it uses as much as digits as its factorization.

20400014432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91071510 (or 91071502 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 20400014432 its reverse (23441000402), we get a palindrome (43841014834).

The spelling of 20400014432 in words is "twenty billion, four hundred million, fourteen thousand, four hundred thirty-two".