383740 has 24 divisors (see below), whose sum is σ = 921312. Its totient is φ = 131520.

The previous prime is 383729. The next prime is 383753. The reversal of 383740 is 47383.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1231 + ... + 1510.

It is an arithmetic number, because the mean of its divisors is an integer number (38388).

2³⁸³⁷⁴⁰ is an apocalyptic number.

It is an amenable number.

383740 is an abundant number, since it is smaller than the sum of its proper divisors (537572).

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

383740 is a wasteful number, since it uses less digits than its factorization.

383740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2757 (or 2755 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 383740 is about 619.4675132725. The cubic root of 383740 is about 72.6684154486.

The spelling of 383740 in words is "three hundred eighty-three thousand, seven hundred forty".