2378881 has 4 divisors (see below), whose sum is σ = 2405700. Its totient is φ = 2352064.

The previous prime is 2378869. The next prime is 2378891. The reversal of 2378881 is 1888732.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 960400 + 1418481 = 980^2 + 1191^2 .

It is a cyclic number.

It is not a de Polignac number, because 2378881 - 2¹³ = 2370689 is a prime.

It is a super-2 number, since 2×2378881² = 11318149624322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2378881.

It is not an unprimeable number, because it can be changed into a prime (2378801) 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 3 ways as a sum of consecutive naturals, for example, 13276 + ... + 13453.

It is an arithmetic number, because the mean of its divisors is an integer number (601425).

2^2378881 is an apocalyptic number.

It is an amenable number.

2378881 is a deficient number, since it is larger than the sum of its proper divisors (26819).

2378881 is an equidigital number, since it uses as much as digits as its factorization.

2378881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26818.

The product of its digits is 21504, while the sum is 37.

The square root of 2378881 is about 1542.3621494318. The cubic root of 2378881 is about 133.4927170392.

The spelling of 2378881 in words is "two million, three hundred seventy-eight thousand, eight hundred eighty-one".