3866238 has 16 divisors (see below), whose sum is σ = 8591760. Its totient is φ = 1288728.

The previous prime is 3866237. The next prime is 3866243. The reversal of 3866238 is 8326683.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3866237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35745 + ... + 35852.

It is an arithmetic number, because the mean of its divisors is an integer number (536985).

Almost surely, 2^3866238 is an apocalyptic number.

3866238 is an abundant number, since it is smaller than the sum of its proper divisors (4725522).

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

3866238 is a wasteful number, since it uses less digits than its factorization.

3866238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71608 (or 71602 counting only the distinct ones).

The product of its digits is 41472, while the sum is 36.

The square root of 3866238 is about 1966.2751587710. The cubic root of 3866238 is about 156.9505571384.

The spelling of 3866238 in words is "three million, eight hundred sixty-six thousand, two hundred thirty-eight".