3978162 has 24 divisors (see below), whose sum is σ = 8917740. Its totient is φ = 1280160.

The previous prime is 3978113. The next prime is 3978167. The reversal of 3978162 is 2618793.

It can be written as a sum of positive squares in 2 ways, for example, as 3767481 + 210681 = 1941^2 + 459^2 .

It is not an unprimeable number, because it can be changed into a prime (3978167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3289 + ... + 4332.

Almost surely, 2^3978162 is an apocalyptic number.

3978162 is an abundant number, since it is smaller than the sum of its proper divisors (4939578).

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

3978162 is a wasteful number, since it uses less digits than its factorization.

3978162 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7658 (or 7655 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 3978162 is about 1994.5330280544. The cubic root of 3978162 is about 158.4506973473.

The spelling of 3978162 in words is "three million, nine hundred seventy-eight thousand, one hundred sixty-two".