321946320 has 40 divisors (see below), whose sum is σ = 998034336. Its totient is φ = 85852288.

The previous prime is 321946307. The next prime is 321946321. The reversal of 321946320 is 23649123.

It is a tau number, because it is divible by the number of its divisors (40).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321946321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 670482 + ... + 670961.

Almost surely, 2^321946320 is an apocalyptic number.

321946320 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

321946320 is an abundant number, since it is smaller than the sum of its proper divisors (676088016).

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

321946320 is a wasteful number, since it uses less digits than its factorization.

321946320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341459 (or 1341453 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 321946320 is about 17942.8626478608. The cubic root of 321946320 is about 685.3743101394.

The spelling of 321946320 in words is "three hundred twenty-one million, nine hundred forty-six thousand, three hundred twenty".