11888281 has 4 divisors (see below), whose sum is σ = 12514000. Its totient is φ = 11262564.

The previous prime is 11888257. The next prime is 11888297. The reversal of 11888281 is 18288811.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 18288811 = 19 ⋅962569.

It is a cyclic number.

It is not a de Polignac number, because 11888281 - 2⁵ = 11888249 is a prime.

It is a super-2 number, since 2×11888281² = 282662450269922, 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 11888281.

It is not an unprimeable number, because it can be changed into a prime (11888251) 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 3 ways as a sum of consecutive naturals, for example, 312831 + ... + 312868.

It is an arithmetic number, because the mean of its divisors is an integer number (3128500).

Almost surely, 2^11888281 is an apocalyptic number.

It is an amenable number.

11888281 is a deficient number, since it is larger than the sum of its proper divisors (625719).

11888281 is an equidigital number, since it uses as much as digits as its factorization.

11888281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 625718.

The product of its digits is 8192, while the sum is 37.

The square root of 11888281 is about 3447.9386595472. The cubic root of 11888281 is about 228.2301525866.

The spelling of 11888281 in words is "eleven million, eight hundred eighty-eight thousand, two hundred eighty-one".