11881745 has 16 divisors (see below), whose sum is σ = 15113280. Its totient is φ = 8942400.

The previous prime is 11881721. The next prime is 11881747. The reversal of 11881745 is 54718811.

It is not a de Polignac number, because 11881745 - 2⁸ = 11881489 is a prime.

11881745 is a Rhonda number in base 10.

Its product of digits (8960) is a multiple of the sum of its prime divisors (896).

It is not an unprimeable number, because it can be changed into a prime (11881747) 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 15 ways as a sum of consecutive naturals, for example, 16850 + ... + 17540.

It is an arithmetic number, because the mean of its divisors is an integer number (944580).

Almost surely, 2^11881745 is an apocalyptic number.

It is an amenable number.

11881745 is a deficient number, since it is larger than the sum of its proper divisors (3231535).

11881745 is a wasteful number, since it uses less digits than its factorization.

11881745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896.

The product of its digits is 8960, while the sum is 35.

The square root of 11881745 is about 3446.9907165526. The cubic root of 11881745 is about 228.1883190719.

The spelling of 11881745 in words is "eleven million, eight hundred eighty-one thousand, seven hundred forty-five".