11861560 has 32 divisors (see below), whose sum is σ = 27851040. Its totient is φ = 4537984.

The previous prime is 11861539. The next prime is 11861569. The reversal of 11861560 is 6516811.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11861569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5527 + ... + 7366.

It is an arithmetic number, because the mean of its divisors is an integer number (870345).

Almost surely, 2^11861560 is an apocalyptic number.

11861560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11861560 is an abundant number, since it is smaller than the sum of its proper divisors (15989480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11861560 is a wasteful number, since it uses less digits than its factorization.

11861560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12927 (or 12923 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 28.

The square root of 11861560 is about 3444.0615557797. The cubic root of 11861560 is about 228.0590285247.

It can be divided in two parts, 11861 and 560, that added together give a palindrome (12421).

The spelling of 11861560 in words is "eleven million, eight hundred sixty-one thousand, five hundred sixty".