11951560 has 32 divisors (see below), whose sum is σ = 27266040. Its totient is φ = 4713984.

The previous prime is 11951557. The next prime is 11951591. The reversal of 11951560 is 6515911.

It can be written as a sum of positive squares in 4 ways, for example, as 9474084 + 2477476 = 3078^2 + 1574^2 .

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 7 ways as a sum of consecutive naturals, for example, 874 + ... + 4966.

Almost surely, 2^11951560 is an apocalyptic number.

11951560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11951560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13633020).

11951560 is an abundant number, since it is smaller than the sum of its proper divisors (15314480).

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

11951560 is a wasteful number, since it uses less digits than its factorization.

11951560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4177 (or 4173 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 28.

The square root of 11951560 is about 3457.1028332984. The cubic root of 11951560 is about 228.6343777513.

The spelling of 11951560 in words is "eleven million, nine hundred fifty-one thousand, five hundred sixty".