11812530 has 32 divisors (see below), whose sum is σ = 29012544. Its totient is φ = 3076416.

The previous prime is 11812529. The next prime is 11812561. The reversal of 11812530 is 3521811.

It is a junction number, because it is equal to n+sod(n) for n = 11812497 and 11812506.

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 15 ways as a sum of consecutive naturals, for example, 3289 + ... + 5868.

It is an arithmetic number, because the mean of its divisors is an integer number (906642).

Almost surely, 2^11812530 is an apocalyptic number.

11812530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11812530 is an abundant number, since it is smaller than the sum of its proper divisors (17200014).

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

11812530 is a wasteful number, since it uses less digits than its factorization.

11812530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9210.

The product of its (nonzero) digits is 240, while the sum is 21.

The square root of 11812530 is about 3436.9361355719. The cubic root of 11812530 is about 227.7443656898.

The spelling of 11812530 in words is "eleven million, eight hundred twelve thousand, five hundred thirty".