11247280 has 40 divisors (see below), whose sum is σ = 28529424. Its totient is φ = 4089600.

The previous prime is 11247277. The next prime is 11247287. The reversal of 11247280 is 8274211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (11247287) 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, 5511 + ... + 7270.

Almost surely, 2^11247280 is an apocalyptic number.

11247280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11247280 is an abundant number, since it is smaller than the sum of its proper divisors (17282144).

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

11247280 is a wasteful number, since it uses less digits than its factorization.

11247280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12805 (or 12799 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 11247280 is about 3353.6964680782. The cubic root of 11247280 is about 224.0521774709.

The spelling of 11247280 in words is "eleven million, two hundred forty-seven thousand, two hundred eighty".