3978630 has 24 divisors (see below), whose sum is σ = 10344672. Its totient is φ = 1060944.

The previous prime is 3978593. The next prime is 3978641. The reversal of 3978630 is 368793.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22014 + ... + 22193.

It is an arithmetic number, because the mean of its divisors is an integer number (431028).

Almost surely, 2^3978630 is an apocalyptic number.

3978630 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3978630 is an abundant number, since it is smaller than the sum of its proper divisors (6366042).

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

3978630 is a wasteful number, since it uses less digits than its factorization.

3978630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44220 (or 44217 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 3978630 is about 1994.6503452986. The cubic root of 3978630 is about 158.4569106034.

The spelling of 3978630 in words is "three million, nine hundred seventy-eight thousand, six hundred thirty".