383540 has 24 divisors (see below), whose sum is σ = 817152. Its totient is φ = 151200.

The previous prime is 383533. The next prime is 383549. The reversal of 383540 is 45383.

383540 = T₁₁₈ + T₁₁₉ + ... + T₁₅₇.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (383549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2465 + ... + 2615.

It is an arithmetic number, because the mean of its divisors is an integer number (34048).

2³⁸³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

383540 is an abundant number, since it is smaller than the sum of its proper divisors (433612).

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

383540 is a wasteful number, since it uses less digits than its factorization.

383540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287 (or 285 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 383540 is about 619.3060632676. The cubic root of 383540 is about 72.6557886624.

The spelling of 383540 in words is "three hundred eighty-three thousand, five hundred forty".