11809002 has 16 divisors (see below), whose sum is σ = 23664960. Its totient is φ = 3928512.

The previous prime is 11809001. The next prime is 11809009. The reversal of 11809002 is 20090811.

It is a self number, because there is not a number n which added to its sum of digits gives 11809002.

It is not an unprimeable number, because it can be changed into a prime (11809001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1899 + ... + 5217.

It is an arithmetic number, because the mean of its divisors is an integer number (1479060).

Almost surely, 2^11809002 is an apocalyptic number.

11809002 is an abundant number, since it is smaller than the sum of its proper divisors (11855958).

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

11809002 is a wasteful number, since it uses less digits than its factorization.

11809002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3917.

The product of its (nonzero) digits is 144, while the sum is 21.

The square root of 11809002 is about 3436.4228494177. The cubic root of 11809002 is about 227.7216902729.

Adding to 11809002 its reverse (20090811), we get a palindrome (31899813).

The spelling of 11809002 in words is "eleven million, eight hundred nine thousand, two".