11808506 has 16 divisors (see below), whose sum is σ = 19111464. Its totient is φ = 5451264.

The previous prime is 11808497. The next prime is 11808509. The reversal of 11808506 is 60580811.

It can be written as a sum of positive squares in 4 ways, for example, as 11282881 + 525625 = 3359^2 + 725^2 .

It is not an unprimeable number, because it can be changed into a prime (11808509) 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, 1475 + ... + 5078.

Almost surely, 2^11808506 is an apocalyptic number.

11808506 is a deficient number, since it is larger than the sum of its proper divisors (7302958).

11808506 is a wasteful number, since it uses less digits than its factorization.

11808506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6625.

The product of its (nonzero) digits is 1920, while the sum is 29.

The square root of 11808506 is about 3436.3506805913. The cubic root of 11808506 is about 227.7185019838.

The spelling of 11808506 in words is "eleven million, eight hundred eight thousand, five hundred six".