304638 has 8 divisors (see below), whose sum is σ = 609288. Its totient is φ = 101544.

The previous prime is 304631. The next prime is 304643. The reversal of 304638 is 836403.

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

304638 is an admirable number.

It is a super-2 number, since 2×304638² = 185608622088, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (304631) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25381 + ... + 25392.

It is an arithmetic number, because the mean of its divisors is an integer number (76161).

2³⁰⁴⁶³⁸ is an apocalyptic number.

304638 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.

304638 is a wasteful number, since it uses less digits than its factorization.

304638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50778.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 304638 is about 551.9402141537. The cubic root of 304638 is about 67.2865134329.

The spelling of 304638 in words is "three hundred four thousand, six hundred thirty-eight".