323998638 has 8 divisors (see below), whose sum is σ = 647997288. Its totient is φ = 107999544.

The previous prime is 323998627. The next prime is 323998651. The reversal of 323998638 is 836899323.

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

323998638 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26999881 + ... + 26999892.

It is an arithmetic number, because the mean of its divisors is an integer number (80999661).

Almost surely, 2^323998638 is an apocalyptic number.

323998638 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

323998638 is a wasteful number, since it uses less digits than its factorization.

323998638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53999778.

The product of its digits is 1679616, while the sum is 51.

The square root of 323998638 is about 17999.9621666269. The cubic root of 323998638 is about 686.8275831228.

The spelling of 323998638 in words is "three hundred twenty-three million, nine hundred ninety-eight thousand, six hundred thirty-eight".