11990800 has 60 divisors (see below), whose sum is σ = 29767936. Its totient is φ = 4636800.

The previous prime is 11990791. The next prime is 11990801. The reversal of 11990800 is 809911.

11990800 = T₈₆₄ + T₈₆₅ + ... + T₈₉₄.

It is not an unprimeable number, because it can be changed into a prime (11990801) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 11917 + ... + 12883.

Almost surely, 2^11990800 is an apocalyptic number.

11990800 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 11990800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14883968).

11990800 is an abundant number, since it is smaller than the sum of its proper divisors (17777136).

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

11990800 is a wasteful number, since it uses less digits than its factorization.

11990800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1016 (or 1005 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 28.

The square root of 11990800 is about 3462.7734549058. The cubic root of 11990800 is about 228.8843259355.

The spelling of 11990800 in words is "eleven million, nine hundred ninety thousand, eight hundred".