3978732 has 24 divisors (see below), whose sum is σ = 9358272. Its totient is φ = 1315600.

The previous prime is 3978727. The next prime is 3978739. The reversal of 3978732 is 2378793.

It is not an unprimeable number, because it can be changed into a prime (3978739) 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, 307 + ... + 2837.

It is an arithmetic number, because the mean of its divisors is an integer number (389928).

Almost surely, 2^3978732 is an apocalyptic number.

It is an amenable number.

3978732 is an abundant number, since it is smaller than the sum of its proper divisors (5379540).

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

3978732 is a wasteful number, since it uses less digits than its factorization.

3978732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2669 (or 2667 counting only the distinct ones).

The product of its digits is 63504, while the sum is 39.

The square root of 3978732 is about 1994.6759135258. The cubic root of 3978732 is about 158.4582647100.

The spelling of 3978732 in words is "three million, nine hundred seventy-eight thousand, seven hundred thirty-two".