2148378 has 16 divisors (see below), whose sum is σ = 4445280. Its totient is φ = 691376.

The previous prime is 2148373. The next prime is 2148379. The reversal of 2148378 is 8738412.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2148373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6000 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (277830).

2^2148378 is an apocalyptic number.

2148378 is an abundant number, since it is smaller than the sum of its proper divisors (2296902).

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

2148378 is a wasteful number, since it uses less digits than its factorization.

2148378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12381.

The product of its digits is 10752, while the sum is 33.

The square root of 2148378 is about 1465.7346280961. The cubic root of 2148378 is about 129.0338232324.

The spelling of 2148378 in words is "two million, one hundred forty-eight thousand, three hundred seventy-eight".