385740 has 36 divisors (see below), whose sum is σ = 1170624. Its totient is φ = 102816.

The previous prime is 385739. The next prime is 385741. The reversal of 385740 is 47583.

It is an interprime number because it is at equal distance from previous prime (385739) and next prime (385741).

It is a tau number, because it is divible by the number of its divisors (36).

It is not an unprimeable number, because it can be changed into a prime (385741) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 892 + ... + 1251.

2³⁸⁵⁷⁴⁰ is an apocalyptic number.

385740 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

385740 is an abundant number, since it is smaller than the sum of its proper divisors (784884).

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

385740 is a wasteful number, since it uses less digits than its factorization.

385740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2158 (or 2153 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 385740 is about 621.0797050299. The cubic root of 385740 is about 72.7944426785.

It can be divided in two parts, 38 and 5740, that added together give a triangular number (5778 = T₁₀₇).

The spelling of 385740 in words is "three hundred eighty-five thousand, seven hundred forty".