402403402320 has 80 divisors (see below), whose sum is σ = 1249690550400. Its totient is φ = 107114885632.

The previous prime is 402403402259. The next prime is 402403402321. The reversal of 402403402320 is 23204304204.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402403402321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1371420 + ... + 1638779.

It is an arithmetic number, because the mean of its divisors is an integer number (15621131880).

Almost surely, 2^402403402320 is an apocalyptic number.

402403402320 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402403402320 is an abundant number, since it is smaller than the sum of its proper divisors (847287148080).

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

402403402320 is a wasteful number, since it uses less digits than its factorization.

402403402320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3010772 (or 3010766 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 24.

Adding to 402403402320 its reverse (23204304204), we get a palindrome (425607706524).

The spelling of 402403402320 in words is "four hundred two billion, four hundred three million, four hundred two thousand, three hundred twenty".