321427340 has 24 divisors (see below), whose sum is σ = 726920880. Its totient is φ = 118680768.

The previous prime is 321427333. The next prime is 321427343. The reversal of 321427340 is 43724123.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (321427343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617870 + ... + 618389.

It is an arithmetic number, because the mean of its divisors is an integer number (30288370).

Almost surely, 2^321427340 is an apocalyptic number.

It is an amenable number.

321427340 is an abundant number, since it is smaller than the sum of its proper divisors (405493540).

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

321427340 is a wasteful number, since it uses less digits than its factorization.

321427340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1236281 (or 1236279 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 26.

The square root of 321427340 is about 17928.3947970810. The cubic root of 321427340 is about 685.0058358144.

The spelling of 321427340 in words is "three hundred twenty-one million, four hundred twenty-seven thousand, three hundred forty".