3865730 has 32 divisors (see below), whose sum is σ = 7682688. Its totient is φ = 1388800.

The previous prime is 3865691. The next prime is 3865733. The reversal of 3865730 is 375683.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (3865733) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12275 + ... + 12585.

It is an arithmetic number, because the mean of its divisors is an integer number (240084).

Almost surely, 2^3865730 is an apocalyptic number.

3865730 is a deficient number, since it is larger than the sum of its proper divisors (3816958).

3865730 is a wasteful number, since it uses less digits than its factorization.

With its successor (3865731) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (442).

3865730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 3865730 is about 1966.1459762693. The cubic root of 3865730 is about 156.9436827233.

It can be divided in two parts, 386 and 5730, that added together give a palindrome (6116).

The spelling of 3865730 in words is "three million, eight hundred sixty-five thousand, seven hundred thirty".