321906016 has 24 divisors (see below), whose sum is σ = 671033160. Its totient is φ = 151484928.

The previous prime is 321905981. The next prime is 321906017. The reversal of 321906016 is 610609123.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321906017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 295326 + ... + 296413.

It is an arithmetic number, because the mean of its divisors is an integer number (27959715).

Almost surely, 2^321906016 is an apocalyptic number.

It is an amenable number.

321906016 is an abundant number, since it is smaller than the sum of its proper divisors (349127144).

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

321906016 is a wasteful number, since it uses less digits than its factorization.

321906016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591766 (or 591758 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 321906016 is about 17941.7394920337. The cubic root of 321906016 is about 685.3457086021.

The spelling of 321906016 in words is "three hundred twenty-one million, nine hundred six thousand, sixteen".