321786468 has 108 divisors (see below), whose sum is σ = 867367228. Its totient is φ = 100552320.

The previous prime is 321786467. The next prime is 321786473. The reversal of 321786468 is 864687123.

It can be written as a sum of positive squares in 2 ways, for example, as 28965924 + 292820544 = 5382^2 + 17112^2 .

It is not an unprimeable number, because it can be changed into a prime (321786463) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1161546 + ... + 1161822.

Almost surely, 2^321786468 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321786468, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433683614).

321786468 is an abundant number, since it is smaller than the sum of its proper divisors (545580760).

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

321786468 is a wasteful number, since it uses less digits than its factorization.

321786468 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394 (or 366 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 321786468 is about 17938.4076216369. The cubic root of 321786468 is about 685.2608579011.

The spelling of 321786468 in words is "three hundred twenty-one million, seven hundred eighty-six thousand, four hundred sixty-eight".