11888261 has 16 divisors (see below), whose sum is σ = 14921088. Its totient is φ = 9201600.

The previous prime is 11888257. The next prime is 11888297. The reversal of 11888261 is 16288811.

11888261 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 11888261 - 2² = 11888257 is a prime.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11888251) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13511 + ... + 14363.

It is an arithmetic number, because the mean of its divisors is an integer number (932568).

Almost surely, 2^11888261 is an apocalyptic number.

11888261 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

11888261 is the 1991-st octagonal number.

It is an amenable number.

11888261 is a deficient number, since it is larger than the sum of its proper divisors (3032827).

11888261 is a wasteful number, since it uses less digits than its factorization.

11888261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1052.

The product of its digits is 6144, while the sum is 35.

The square root of 11888261 is about 3447.9357592623. The cubic root of 11888261 is about 228.2300246004.

It can be divided in two parts, 1188 and 8261, that added together give a palindrome (9449).

The spelling of 11888261 in words is "eleven million, eight hundred eighty-eight thousand, two hundred sixty-one".