321494940 has 192 divisors, whose sum is σ = 1104405120. Its totient is φ = 77137920.

The previous prime is 321494923. The next prime is 321494951. The reversal of 321494940 is 49494123.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 321494895 and 321494904.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 287262 + ... + 288378.

It is an arithmetic number, because the mean of its divisors is an integer number (5752110).

Almost surely, 2^321494940 is an apocalyptic number.

321494940 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 321494940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (552202560).

321494940 is an abundant number, since it is smaller than the sum of its proper divisors (782910180).

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

321494940 is a wasteful number, since it uses less digits than its factorization.

321494940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1189 (or 1181 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 321494940 is about 17930.2799755051. The cubic root of 321494940 is about 685.0538540784.

The spelling of 321494940 in words is "three hundred twenty-one million, four hundred ninety-four thousand, nine hundred forty".