321386416 has 20 divisors (see below), whose sum is σ = 670585552. Its totient is φ = 148332096.

The previous prime is 321386363. The next prime is 321386419. The reversal of 321386416 is 614683123.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (321386419) 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 3 ways as a sum of consecutive naturals, for example, 772356 + ... + 772771.

Almost surely, 2^321386416 is an apocalyptic number.

It is an amenable number.

321386416 is an abundant number, since it is smaller than the sum of its proper divisors (349199136).

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

321386416 is a wasteful number, since it uses less digits than its factorization.

321386416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1545148 (or 1545142 counting only the distinct ones).

The product of its digits is 20736, while the sum is 34.

The square root of 321386416 is about 17927.2534427335. The cubic root of 321386416 is about 684.9767630244.

The spelling of 321386416 in words is "three hundred twenty-one million, three hundred eighty-six thousand, four hundred sixteen".