11563990 has 16 divisors (see below), whose sum is σ = 21300048. Its totient is φ = 4517856.

The previous prime is 11563987. The next prime is 11563997. The reversal of 11563990 is 9936511.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11563997) 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 7 ways as a sum of consecutive naturals, for example, 13017 + ... + 13876.

It is an arithmetic number, because the mean of its divisors is an integer number (1331253).

Almost surely, 2^11563990 is an apocalyptic number.

11563990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11563990 is a deficient number, since it is larger than the sum of its proper divisors (9736058).

11563990 is a wasteful number, since it uses less digits than its factorization.

11563990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26943.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 11563990 is about 3400.5867140833. The cubic root of 11563990 is about 226.1357552295.

It can be divided in two parts, 11 and 563990, that added together give a square (564001 = 751²).

The spelling of 11563990 in words is "eleven million, five hundred sixty-three thousand, nine hundred ninety".