11891245 has 32 divisors (see below), whose sum is σ = 16416000. Its totient is φ = 8211456.

The previous prime is 11891203. The next prime is 11891251. The reversal of 11891245 is 54219811.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 11891245 - 2⁹ = 11890733 is a prime.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 59656 + ... + 59854.

It is an arithmetic number, because the mean of its divisors is an integer number (513000).

Almost surely, 2^11891245 is an apocalyptic number.

It is an amenable number.

11891245 is a deficient number, since it is larger than the sum of its proper divisors (4524755).

11891245 is a wasteful number, since it uses less digits than its factorization.

11891245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 277.

The product of its digits is 2880, while the sum is 31.

The square root of 11891245 is about 3448.3684547913. The cubic root of 11891245 is about 228.2491185459.

The spelling of 11891245 in words is "eleven million, eight hundred ninety-one thousand, two hundred forty-five".