321400002400 has 72 divisors (see below), whose sum is σ = 825913466280. Its totient is φ = 121793679360.

The previous prime is 321400002397. The next prime is 321400002431. The reversal of 321400002400 is 4200004123.

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

It is a congruent number.

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, 10557169 + ... + 10587568.

It is an arithmetic number, because the mean of its divisors is an integer number (11471020365).

Almost surely, 2^321400002400 is an apocalyptic number.

It is an amenable number.

321400002400 is an abundant number, since it is smaller than the sum of its proper divisors (504513463880).

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

321400002400 is a wasteful number, since it uses less digits than its factorization.

321400002400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21144776 (or 21144763 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

Adding to 321400002400 its reverse (4200004123), we get a palindrome (325600006523).

The spelling of 321400002400 in words is "three hundred twenty-one billion, four hundred million, two thousand, four hundred".