11988500 has 24 divisors (see below), whose sum is σ = 26183976. Its totient is φ = 4795200.

The previous prime is 11988469. The next prime is 11988517. The reversal of 11988500 is 588911.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 712336 + 11276164 = 844^2 + 3358^2 .

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 11489 + ... + 12488.

It is an arithmetic number, because the mean of its divisors is an integer number (1090999).

Almost surely, 2^11988500 is an apocalyptic number.

11988500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11988500 is an abundant number, since it is smaller than the sum of its proper divisors (14195476).

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

11988500 is a wasteful number, since it uses less digits than its factorization.

11988500 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23996 (or 23984 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 32.

The square root of 11988500 is about 3462.4413352431. The cubic root of 11988500 is about 228.8696906148.

The spelling of 11988500 in words is "eleven million, nine hundred eighty-eight thousand, five hundred".