11806530 has 16 divisors (see below), whose sum is σ = 28335744. Its totient is φ = 3148400.

The previous prime is 11806513. The next prime is 11806537. The reversal of 11806530 is 3560811.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 11806530.

It is not an unprimeable number, because it can be changed into a prime (11806537) 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, 196746 + ... + 196805.

It is an arithmetic number, because the mean of its divisors is an integer number (1770984).

Almost surely, 2^11806530 is an apocalyptic number.

11806530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11806530 is an abundant number, since it is smaller than the sum of its proper divisors (16529214).

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

11806530 is a wasteful number, since it uses less digits than its factorization.

11806530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393561.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 11806530 is about 3436.0631542508. The cubic root of 11806530 is about 227.7057993647.

The spelling of 11806530 in words is "eleven million, eight hundred six thousand, five hundred thirty".