3878431 has 8 divisors (see below), whose sum is σ = 4248720. Its totient is φ = 3523968.

The previous prime is 3878423. The next prime is 3878447. The reversal of 3878431 is 1348783.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3878431 - 2³ = 3878423 is a prime.

It is a super-2 number, since 2×3878431² = 30084454043522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3878401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3441 + ... + 4426.

It is an arithmetic number, because the mean of its divisors is an integer number (531090).

Almost surely, 2^3878431 is an apocalyptic number.

3878431 is a deficient number, since it is larger than the sum of its proper divisors (370289).

3878431 is a wasteful number, since it uses less digits than its factorization.

3878431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7913.

The product of its digits is 16128, while the sum is 34.

The square root of 3878431 is about 1969.3732505546. The cubic root of 3878431 is about 157.1153762649.

The spelling of 3878431 in words is "three million, eight hundred seventy-eight thousand, four hundred thirty-one".