11798505 has 24 divisors (see below), whose sum is σ = 21158280. Its totient is φ = 6074880.

The previous prime is 11798491. The next prime is 11798513. The reversal of 11798505 is 50589711.

11798505 = 648² + 649² + ... + 674².

11798505 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 4717584 + 7080921 = 2172^2 + 2661^2 .

It is not a de Polignac number, because 11798505 - 2¹³ = 11790313 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 11798505.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3216 + ... + 5825.

It is an arithmetic number, because the mean of its divisors is an integer number (881595).

Almost surely, 2^11798505 is an apocalyptic number.

11798505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11798505 is a deficient number, since it is larger than the sum of its proper divisors (9359775).

11798505 is a wasteful number, since it uses less digits than its factorization.

11798505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9081 (or 9078 counting only the distinct ones).

The product of its (nonzero) digits is 12600, while the sum is 36.

The square root of 11798505 is about 3434.8951949077. The cubic root of 11798505 is about 227.6541964744.

The spelling of 11798505 in words is "eleven million, seven hundred ninety-eight thousand, five hundred five".