11628009 has 16 divisors (see below), whose sum is σ = 17307840. Its totient is φ = 7715520.

The previous prime is 11627989. The next prime is 11628013. The reversal of 11628009 is 90082611.

It is not a de Polignac number, because 11628009 - 2²⁰ = 10579433 is a prime.

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

It is not an unprimeable number, because it can be changed into a prime (11628059) 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, 5614 + ... + 7400.

It is an arithmetic number, because the mean of its divisors is an integer number (1081740).

Almost surely, 2^11628009 is an apocalyptic number.

It is an amenable number.

11628009 is a deficient number, since it is larger than the sum of its proper divisors (5679831).

11628009 is a wasteful number, since it uses less digits than its factorization.

11628009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2031 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 11628009 is about 3409.9866568654. The cubic root of 11628009 is about 226.5522882659.

The spelling of 11628009 in words is "eleven million, six hundred twenty-eight thousand, nine".