385240 has 16 divisors (see below), whose sum is σ = 866880. Its totient is φ = 154080.

The previous prime is 385223. The next prime is 385249. The reversal of 385240 is 42583.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (385249) 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, 4776 + ... + 4855.

It is an arithmetic number, because the mean of its divisors is an integer number (54180).

2³⁸⁵²⁴⁰ is an apocalyptic number.

It is an amenable number.

385240 is an abundant number, since it is smaller than the sum of its proper divisors (481640).

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

385240 is a wasteful number, since it uses less digits than its factorization.

385240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9642 (or 9638 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 385240 is about 620.6770496804. The cubic root of 385240 is about 72.7629767871.

It can be divided in two parts, 385 and 240, that added together give a 4-th power (625 = 5⁴).

The spelling of 385240 in words is "three hundred eighty-five thousand, two hundred forty".