11905280 has 72 divisors (see below), whose sum is σ = 29139264. Its totient is φ = 4659200.

The previous prime is 11905273. The next prime is 11905303. The reversal of 11905280 is 8250911.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90815 + ... + 90945.

It is an arithmetic number, because the mean of its divisors is an integer number (404712).

Almost surely, 2^11905280 is an apocalyptic number.

11905280 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 11905280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (14569632).

11905280 is an abundant number, since it is smaller than the sum of its proper divisors (17233984).

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

11905280 is an equidigital number, since it uses as much as digits as its factorization.

11905280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223 (or 209 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 26.

The square root of 11905280 is about 3450.4028750278. The cubic root of 11905280 is about 228.3388825381.

The spelling of 11905280 in words is "eleven million, nine hundred five thousand, two hundred eighty".