3828978 has 64 divisors (see below), whose sum is σ = 9313920. Its totient is φ = 1161216.

The previous prime is 3828973. The next prime is 3829079. The reversal of 3828978 is 8798283.

It is a super-2 number, since 2×3828978² = 29322145048968, which contains 22 as substring.

Its product of digits (193536) is a multiple of the sum of its prime factors (168).

It is not an unprimeable number, because it can be changed into a prime (3828973) 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 31 ways as a sum of consecutive naturals, for example, 39426 + ... + 39522.

It is an arithmetic number, because the mean of its divisors is an integer number (145530).

Almost surely, 2^3828978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3828978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4656960).

3828978 is an abundant number, since it is smaller than the sum of its proper divisors (5484942).

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

3828978 is a wasteful number, since it uses less digits than its factorization.

3828978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168 (or 162 counting only the distinct ones).

The product of its digits is 193536, while the sum is 45.

The square root of 3828978 is about 1956.7774528546. Note that the first 3 decimals coincide. The cubic root of 3828978 is about 156.4447368223. Note that the first 3 decimals are identical.

The spelling of 3828978 in words is "three million, eight hundred twenty-eight thousand, nine hundred seventy-eight".