11728280 has 16 divisors (see below), whose sum is σ = 26388720. Its totient is φ = 4691296.

The previous prime is 11728279. The next prime is 11728289. The reversal of 11728280 is 8282711.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11728289) 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 3 ways as a sum of consecutive naturals, for example, 146564 + ... + 146643.

It is an arithmetic number, because the mean of its divisors is an integer number (1649295).

Almost surely, 2^11728280 is an apocalyptic number.

11728280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11728280 is an abundant number, since it is smaller than the sum of its proper divisors (14660440).

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

11728280 is a wasteful number, since it uses less digits than its factorization.

11728280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293218 (or 293214 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 29.

The square root of 11728280 is about 3424.6576471233. The cubic root of 11728280 is about 227.2016295426.

The spelling of 11728280 in words is "eleven million, seven hundred twenty-eight thousand, two hundred eighty".