11487805 has 12 divisors (see below), whose sum is σ = 16036380. Its totient is φ = 7877184.

The previous prime is 11487793. The next prime is 11487809. The reversal of 11487805 is 50878411.

It can be written as a sum of positive squares in 2 ways, for example, as 4923961 + 6563844 = 2219^2 + 2562^2 .

It is not a de Polignac number, because 11487805 - 2⁹ = 11487293 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11487809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23200 + ... + 23689.

It is an arithmetic number, because the mean of its divisors is an integer number (1336365).

Almost surely, 2^11487805 is an apocalyptic number.

It is an amenable number.

11487805 is a deficient number, since it is larger than the sum of its proper divisors (4548575).

11487805 is an equidigital number, since it uses as much as digits as its factorization.

11487805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46908 (or 46901 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 11487805 is about 3389.3664599745. The cubic root of 11487805 is about 225.6380571936.

The spelling of 11487805 in words is "eleven million, four hundred eighty-seven thousand, eight hundred five".