3974278 has 32 divisors (see below), whose sum is σ = 7527168. Its totient is φ = 1528800.

The previous prime is 3974261. The next prime is 3974279. The reversal of 3974278 is 8724793.

It is a self number, because there is not a number n which added to its sum of digits gives 3974278.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3974279) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20076 + ... + 20272.

It is an arithmetic number, because the mean of its divisors is an integer number (235224).

Almost surely, 2^3974278 is an apocalyptic number.

3974278 is a deficient number, since it is larger than the sum of its proper divisors (3552890).

3974278 is a wasteful number, since it uses less digits than its factorization.

3974278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 348.

The product of its digits is 84672, while the sum is 40.

The square root of 3974278 is about 1993.5591287945. The cubic root of 3974278 is about 158.3991138185.

The spelling of 3974278 in words is "three million, nine hundred seventy-four thousand, two hundred seventy-eight".