3878281 has 8 divisors (see below), whose sum is σ = 4249728. Its totient is φ = 3510000.

The previous prime is 3878279. The next prime is 3878291. The reversal of 3878281 is 1828783.

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 3878281 - 2¹ = 3878279 is a prime.

It is a super-2 number, since 2×3878281² = 30082127029922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3878281.

It is not an unprimeable number, because it can be changed into a prime (3878221) 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, 2331 + ... + 3631.

It is an arithmetic number, because the mean of its divisors is an integer number (531216).

Almost surely, 2^3878281 is an apocalyptic number.

It is an amenable number.

3878281 is a deficient number, since it is larger than the sum of its proper divisors (371447).

3878281 is a wasteful number, since it uses less digits than its factorization.

3878281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583.

The product of its digits is 21504, while the sum is 37.

The square root of 3878281 is about 1969.3351670043. The cubic root of 3878281 is about 157.1133507370.

It can be divided in two parts, 387 and 8281, that added together give a palindrome (8668).

The spelling of 3878281 in words is "three million, eight hundred seventy-eight thousand, two hundred eighty-one".