2148881 has 16 divisors (see below), whose sum is σ = 2626560. Its totient is φ = 1717200.

The previous prime is 2148877. The next prime is 2148893. The reversal of 2148881 is 1888412.

It is a cyclic number.

It is not a de Polignac number, because 2148881 - 2² = 2148877 is a prime.

It is a super-2 number, since 2×2148881² = 9235379104322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (32) 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 not an unprimeable number, because it can be changed into a prime (2148781) 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 15 ways as a sum of consecutive naturals, for example, 14156 + ... + 14306.

It is an arithmetic number, because the mean of its divisors is an integer number (164160).

2^2148881 is an apocalyptic number.

It is an amenable number.

2148881 is a deficient number, since it is larger than the sum of its proper divisors (477679).

2148881 is a wasteful number, since it uses less digits than its factorization.

2148881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284.

The product of its digits is 4096, while the sum is 32.

The square root of 2148881 is about 1465.9062043664. The cubic root of 2148881 is about 129.0438926814.

The spelling of 2148881 in words is "two million, one hundred forty-eight thousand, eight hundred eighty-one".