11481280 has 28 divisors (see below), whose sum is σ = 27340560. Its totient is φ = 4592384.

The previous prime is 11481269. The next prime is 11481289. The reversal of 11481280 is 8218411.

It is not an unprimeable number, because it can be changed into a prime (11481289) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17620 + ... + 18259.

Almost surely, 2^11481280 is an apocalyptic number.

11481280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11481280 is an abundant number, since it is smaller than the sum of its proper divisors (15859280).

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

11481280 is an equidigital number, since it uses as much as digits as its factorization.

11481280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35896 (or 35886 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 25.

The square root of 11481280 is about 3388.4037539821. The cubic root of 11481280 is about 225.5953287767.

Adding to 11481280 its reverse (8218411), we get a palindrome (19699691).

The spelling of 11481280 in words is "eleven million, four hundred eighty-one thousand, two hundred eighty".