3183978 has 48 divisors (see below), whose sum is σ = 7632576. Its totient is φ = 866880.

The previous prime is 3183977. The next prime is 3183989. The reversal of 3183978 is 8793813.

Its product of digits (36288) is a multiple of the sum of its prime divisors (96).

It is not an unprimeable number, because it can be changed into a prime (3183977) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 74025 + ... + 74067.

It is an arithmetic number, because the mean of its divisors is an integer number (159012).

Almost surely, 2^3183978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3183978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3816288).

3183978 is an abundant number, since it is smaller than the sum of its proper divisors (4448598).

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

3183978 is a wasteful number, since it uses less digits than its factorization.

3183978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 96 counting only the distinct ones).

The product of its digits is 36288, while the sum is 39.

The square root of 3183978 is about 1784.3704772272. The cubic root of 3183978 is about 147.1149085340.

The spelling of 3183978 in words is "three million, one hundred eighty-three thousand, nine hundred seventy-eight".