3780378 has 64 divisors (see below), whose sum is σ = 9803520. Its totient is φ = 1057536.

The previous prime is 3780377. The next prime is 3780389. The reversal of 3780378 is 8730873.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3780377) 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, 27526 + ... + 27662.

It is an arithmetic number, because the mean of its divisors is an integer number (153180).

Almost surely, 2^3780378 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3780378, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4901760).

3780378 is an abundant number, since it is smaller than the sum of its proper divisors (6023142).

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

3780378 is a wasteful number, since it uses less digits than its factorization.

3780378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228 (or 222 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 3780378 is about 1944.3194182027. The cubic root of 3780378 is about 155.7800153766.

The spelling of 3780378 in words is "three million, seven hundred eighty thousand, three hundred seventy-eight".