3867381 has 48 divisors (see below), whose sum is σ = 7098624. Its totient is φ = 1976832.

The previous prime is 3867371. The next prime is 3867389. The reversal of 3867381 is 1837683.

It is not a de Polignac number, because 3867381 - 2⁵ = 3867349 is a prime.

It is a super-2 number, since 2×3867381² = 29913271598322, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3867389) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24555 + ... + 24711.

It is an arithmetic number, because the mean of its divisors is an integer number (147888).

Almost surely, 2^3867381 is an apocalyptic number.

It is an amenable number.

3867381 is a deficient number, since it is larger than the sum of its proper divisors (3231243).

3867381 is a wasteful number, since it uses less digits than its factorization.

3867381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 207 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 3867381 is about 1966.5657883732. The cubic root of 3867381 is about 156.9660223712.

The spelling of 3867381 in words is "three million, eight hundred sixty-seven thousand, three hundred eighty-one".