32400400424 has 32 divisors (see below), whose sum is σ = 69496377600. Its totient is φ = 13872496320.

The previous prime is 32400400399. The next prime is 32400400441. The reversal of 32400400424 is 42400400423.

It is a self number, because there is not a number n which added to its sum of digits gives 32400400424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220247 + ... + 336614.

It is an arithmetic number, because the mean of its divisors is an integer number (2171761800).

Almost surely, 2^32400400424 is an apocalyptic number.

It is an amenable number.

32400400424 is an abundant number, since it is smaller than the sum of its proper divisors (37095977176).

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

32400400424 is a wasteful number, since it uses less digits than its factorization.

32400400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557913 (or 557909 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 23.

Adding to 32400400424 its reverse (42400400423), we get a palindrome (74800800847).

Subtracting 32400400424 from its reverse (42400400423), we obtain a palindrome (9999999999).

The spelling of 32400400424 in words is "thirty-two billion, four hundred million, four hundred thousand, four hundred twenty-four".