11280249 has 16 divisors (see below), whose sum is σ = 17251840. Its totient is φ = 7277040.

The previous prime is 11280239. The next prime is 11280253. The reversal of 11280249 is 94208211.

It is a de Polignac number, because none of the positive numbers 2^k-11280249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11280239) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5902 + ... + 7575.

It is an arithmetic number, because the mean of its divisors is an integer number (1078240).

Almost surely, 2^11280249 is an apocalyptic number.

It is an amenable number.

11280249 is a deficient number, since it is larger than the sum of its proper divisors (5971591).

11280249 is a wasteful number, since it uses less digits than its factorization.

11280249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13517 (or 13511 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 11280249 is about 3358.6081938803. The cubic root of 11280249 is about 224.2708842867.

The spelling of 11280249 in words is "eleven million, two hundred eighty thousand, two hundred forty-nine".