322678421 has 8 divisors (see below), whose sum is σ = 348600504. Its totient is φ = 296913600.

The previous prime is 322678409. The next prime is 322678481. The reversal of 322678421 is 124876223.

It can be written as a sum of positive squares in 4 ways, for example, as 30747025 + 291931396 = 5545^2 + 17086^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-322678421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (322678481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35030 + ... + 43271.

It is an arithmetic number, because the mean of its divisors is an integer number (43575063).

Almost surely, 2^322678421 is an apocalyptic number.

It is an amenable number.

322678421 is a deficient number, since it is larger than the sum of its proper divisors (25922083).

322678421 is a wasteful number, since it uses less digits than its factorization.

322678421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78631.

The product of its digits is 32256, while the sum is 35.

The square root of 322678421 is about 17963.2519606000. The cubic root of 322678421 is about 685.8934270775.

The spelling of 322678421 in words is "three hundred twenty-two million, six hundred seventy-eight thousand, four hundred twenty-one".