3978136 has 16 divisors (see below), whose sum is σ = 7898040. Its totient is φ = 1872000.

The previous prime is 3978113. The next prime is 3978167. The reversal of 3978136 is 6318793.

It is a junction number, because it is equal to n+sod(n) for n = 3978095 and 3978104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14490 + ... + 14761.

Almost surely, 2^3978136 is an apocalyptic number.

It is an amenable number.

3978136 is a deficient number, since it is larger than the sum of its proper divisors (3919904).

3978136 is a wasteful number, since it uses less digits than its factorization.

3978136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29274 (or 29270 counting only the distinct ones).

The product of its digits is 27216, while the sum is 37.

The square root of 3978136 is about 1994.5265102274. The cubic root of 3978136 is about 158.4503521521.

It can be divided in two parts, 3978 and 136, that added together give a palindrome (4114).

The spelling of 3978136 in words is "three million, nine hundred seventy-eight thousand, one hundred thirty-six".