383508 has 48 divisors (see below), whose sum is σ = 1028160. Its totient is φ = 123552.

The previous prime is 383489. The next prime is 383519. The reversal of 383508 is 805383.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

383508 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5691 + ... + 5757.

It is an arithmetic number, because the mean of its divisors is an integer number (21420).

2³⁸³⁵⁰⁸ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 383508, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514080).

383508 is an abundant number, since it is smaller than the sum of its proper divisors (644652).

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

383508 is a wasteful number, since it uses less digits than its factorization.

383508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133 (or 125 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 383508 is about 619.2802273608. The cubic root of 383508 is about 72.6537679693.

Subtracting from 383508 its product of nonzero digits (2880), we obtain a triangular number (380628 = T₈₇₂).

Subtracting 383508 from its reverse (805383), we obtain a cube (421875 = 75³).

The spelling of 383508 in words is "three hundred eighty-three thousand, five hundred eight".