321412860 has 120 divisors (see below), whose sum is σ = 1014367200. Its totient is φ = 85193856.

The previous prime is 321412849. The next prime is 321412877. The reversal of 321412860 is 68214123.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 321882 + ... + 322878.

It is an arithmetic number, because the mean of its divisors is an integer number (8453060).

Almost surely, 2^321412860 is an apocalyptic number.

321412860 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321412860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (507183600).

321412860 is an abundant number, since it is smaller than the sum of its proper divisors (692954340).

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

321412860 is a wasteful number, since it uses less digits than its factorization.

321412860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1217 (or 1206 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 321412860 is about 17927.9909638531. The cubic root of 321412860 is about 684.9955493699.

Adding to 321412860 its reverse (68214123), we get a palindrome (389626983).

The spelling of 321412860 in words is "three hundred twenty-one million, four hundred twelve thousand, eight hundred sixty".