2981378 has 8 divisors (see below), whose sum is σ = 4490640. Its totient is φ = 1484500.

The previous prime is 2981371. The next prime is 2981383. The reversal of 2981378 is 8731892.

2981378 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×2981378² = 17777229557768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2981371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2468 + ... + 3471.

It is an arithmetic number, because the mean of its divisors is an integer number (561330).

2^2981378 is an apocalyptic number.

2981378 is a deficient number, since it is larger than the sum of its proper divisors (1509262).

2981378 is a wasteful number, since it uses less digits than its factorization.

2981378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6192.

The product of its digits is 24192, while the sum is 38.

The square root of 2981378 is about 1726.6667310167. Note that the first 3 decimals coincide. The cubic root of 2981378 is about 143.9259199726.

The spelling of 2981378 in words is "two million, nine hundred eighty-one thousand, three hundred seventy-eight".