321906046 has 32 divisors (see below), whose sum is σ = 621434880. Its totient is φ = 121370400.

The previous prime is 321906029. The next prime is 321906059. The reversal of 321906046 is 640609123.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a junction number, because it is equal to n+sod(n) for n = 321905999 and 321906017.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28941 + ... + 38488.

It is an arithmetic number, because the mean of its divisors is an integer number (19419840).

Almost surely, 2^321906046 is an apocalyptic number.

321906046 is a deficient number, since it is larger than the sum of its proper divisors (299528834).

321906046 is a wasteful number, since it uses less digits than its factorization.

321906046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67480.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 321906046 is about 17941.7403280730. The cubic root of 321906046 is about 685.3457298924.

The spelling of 321906046 in words is "three hundred twenty-one million, nine hundred six thousand, forty-six".