383240 has 64 divisors (see below), whose sum is σ = 1028160. Its totient is φ = 126720.

The previous prime is 383221. The next prime is 383261. The reversal of 383240 is 42383.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

383240 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, 5687 + ... + 5753.

It is an arithmetic number, because the mean of its divisors is an integer number (16065).

2³⁸³²⁴⁰ 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 383240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (514080).

383240 is an abundant number, since it is smaller than the sum of its proper divisors (644920).

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

383240 is a wasteful number, since it uses less digits than its factorization.

383240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102 (or 98 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 383240 is about 619.0638093121. The cubic root of 383240 is about 72.6368402502.

The spelling of 383240 in words is "three hundred eighty-three thousand, two hundred forty".