3868724 has 12 divisors (see below), whose sum is σ = 7168644. Its totient is φ = 1820544.

The previous prime is 3868721. The next prime is 3868729. The reversal of 3868724 is 4278683.

It can be written as a sum of positive squares in 2 ways, for example, as 1737124 + 2131600 = 1318^2 + 1460^2 .

It is a d-powerful number, because it can be written as 3¹⁰ + 8⁵ + 6⁸ + 8⁷ + 7 + 2⁷ + 4 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3868721) 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, 28379 + ... + 28514.

It is an arithmetic number, because the mean of its divisors is an integer number (597387).

Almost surely, 2^3868724 is an apocalyptic number.

3868724 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

3868724 is a deficient number, since it is larger than the sum of its proper divisors (3299920).

3868724 is a wasteful number, since it uses less digits than its factorization.

3868724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56914 (or 56912 counting only the distinct ones).

The product of its digits is 64512, while the sum is 38.

The square root of 3868724 is about 1966.9072169271. The cubic root of 3868724 is about 156.9841897882.

The spelling of 3868724 in words is "three million, eight hundred sixty-eight thousand, seven hundred twenty-four".