11890755 has 24 divisors (see below), whose sum is σ = 20769840. Its totient is φ = 6292800.

The previous prime is 11890741. The next prime is 11890757. The reversal of 11890755 is 55709811.

It is not a de Polignac number, because 11890755 - 2⁸ = 11890499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11890757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5305 + ... + 7205.

It is an arithmetic number, because the mean of its divisors is an integer number (865410).

Almost surely, 2^11890755 is an apocalyptic number.

11890755 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

11890755 is a deficient number, since it is larger than the sum of its proper divisors (8879085).

11890755 is a wasteful number, since it uses less digits than its factorization.

11890755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2051 (or 2048 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 11890755 is about 3448.2974059672. The cubic root of 11890755 is about 228.2459833652.

The spelling of 11890755 in words is "eleven million, eight hundred ninety thousand, seven hundred fifty-five".