11871045 has 24 divisors (see below), whose sum is σ = 20678112. Its totient is φ = 6300000.

The previous prime is 11871019. The next prime is 11871061. The reversal of 11871045 is 54017811.

It is not a de Polignac number, because 11871045 - 2¹² = 11866949 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 (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10770 + ... + 11820.

It is an arithmetic number, because the mean of its divisors is an integer number (861588).

Almost surely, 2^11871045 is an apocalyptic number.

11871045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11871045 is a deficient number, since it is larger than the sum of its proper divisors (8807067).

11871045 is a wasteful number, since it uses less digits than its factorization.

11871045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1310 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 27.

The square root of 11871045 is about 3445.4382885201. The cubic root of 11871045 is about 228.1198008448.

Adding to 11871045 its reverse (54017811), we get a palindrome (65888856).

The spelling of 11871045 in words is "eleven million, eight hundred seventy-one thousand, forty-five".