321461428 has 24 divisors (see below), whose sum is σ = 573265280. Its totient is φ = 157722552.

The previous prime is 321461423. The next prime is 321461429. The reversal of 321461428 is 824164123.

It is a self number, because there is not a number n which added to its sum of digits gives 321461428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321461423) 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, 1972075 + ... + 1972237.

Almost surely, 2^321461428 is an apocalyptic number.

It is an amenable number.

321461428 is a deficient number, since it is larger than the sum of its proper divisors (251803852).

321461428 is an frugal number, since it uses more digits than its factorization.

321461428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 404 (or 244 counting only the distinct ones).

The product of its digits is 9216, while the sum is 31.

The square root of 321461428 is about 17929.3454425977. The cubic root of 321461428 is about 685.0300503627.

The spelling of 321461428 in words is "three hundred twenty-one million, four hundred sixty-one thousand, four hundred twenty-eight".