11280997 has 16 divisors (see below), whose sum is σ = 14152320. Its totient is φ = 8753472.

The previous prime is 11280989. The next prime is 11281001. The reversal of 11280997 is 79908211.

It is not a de Polignac number, because 11280997 - 2³ = 11280989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11280937) 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, 3654 + ... + 5992.

It is an arithmetic number, because the mean of its divisors is an integer number (884520).

Almost surely, 2^11280997 is an apocalyptic number.

It is an amenable number.

11280997 is a deficient number, since it is larger than the sum of its proper divisors (2871323).

11280997 is a wasteful number, since it uses less digits than its factorization.

11280997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2412.

The product of its (nonzero) digits is 9072, while the sum is 37.

The square root of 11280997 is about 3358.7195476848. The cubic root of 11280997 is about 224.2758413556.

The spelling of 11280997 in words is "eleven million, two hundred eighty thousand, nine hundred ninety-seven".