3878724 has 24 divisors (see below), whose sum is σ = 9092160. Its totient is φ = 1286944.

The previous prime is 3878713. The next prime is 3878741. The reversal of 3878724 is 4278783.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2542 + ... + 3770.

It is an arithmetic number, because the mean of its divisors is an integer number (378840).

Almost surely, 2^3878724 is an apocalyptic number.

It is an amenable number.

3878724 is an abundant number, since it is smaller than the sum of its proper divisors (5213436).

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

3878724 is a wasteful number, since it uses less digits than its factorization.

3878724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499 (or 1497 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 3878724 is about 1969.4476382986. The cubic root of 3878724 is about 157.1193326454.

The spelling of 3878724 in words is "three million, eight hundred seventy-eight thousand, seven hundred twenty-four".