3856724 has 12 divisors (see below), whose sum is σ = 6775104. Its totient is φ = 1920984.

The previous prime is 3856717. The next prime is 3856729. The reversal of 3856724 is 4276583.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3856729) 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, 572 + ... + 2835.

It is an arithmetic number, because the mean of its divisors is an integer number (564592).

Almost surely, 2^3856724 is an apocalyptic number.

It is an amenable number.

3856724 is a deficient number, since it is larger than the sum of its proper divisors (2918380).

3856724 is a wasteful number, since it uses less digits than its factorization.

3856724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3694 (or 3692 counting only the distinct ones).

The product of its digits is 40320, while the sum is 35.

The square root of 3856724 is about 1963.8543734198. The cubic root of 3856724 is about 156.8217106027.

It can be divided in two parts, 38 and 56724, that multiplied together give a palindrome (2155512).

The spelling of 3856724 in words is "three million, eight hundred fifty-six thousand, seven hundred twenty-four".