11280971 has 16 divisors (see below), whose sum is σ = 13124160. Its totient is φ = 9609600.

The previous prime is 11280953. The next prime is 11280989. The reversal of 11280971 is 17908211.

It is an interprime number because it is at equal distance from previous prime (11280953) and next prime (11280989).

It is a de Polignac number, because none of the positive numbers 2^k-11280971 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11250971) 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, 8021 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (820260).

Almost surely, 2^11280971 is an apocalyptic number.

11280971 is a deficient number, since it is larger than the sum of its proper divisors (1843189).

11280971 is a wasteful number, since it uses less digits than its factorization.

11280971 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366.

The product of its (nonzero) digits is 1008, while the sum is 29.

The square root of 11280971 is about 3358.7156771599. The cubic root of 11280971 is about 224.2756690547.

The spelling of 11280971 in words is "eleven million, two hundred eighty thousand, nine hundred seventy-one".