321846138 has 24 divisors (see below), whose sum is σ = 697732308. Its totient is φ = 107220672.

The previous prime is 321846131. The next prime is 321846139. The reversal of 321846138 is 831648123.

321846138 is a `hidden beast` number, since 32 + 1 + 8 + 4 + 613 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 319587129 + 2259009 = 17877^2 + 1503^2 .

It is not an unprimeable number, because it can be changed into a prime (321846131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36270 + ... + 44262.

Almost surely, 2^321846138 is an apocalyptic number.

321846138 is an abundant number, since it is smaller than the sum of its proper divisors (375886170).

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

321846138 is a wasteful number, since it uses less digits than its factorization.

321846138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10238 (or 10235 counting only the distinct ones).

The product of its digits is 27648, while the sum is 36.

The square root of 321846138 is about 17940.0707356465. The cubic root of 321846138 is about 685.3032120628.

The spelling of 321846138 in words is "three hundred twenty-one million, eight hundred forty-six thousand, one hundred thirty-eight".