11289645 has 32 divisors (see below), whose sum is σ = 20211840. Its totient is φ = 5978880.

The previous prime is 11289631. The next prime is 11289647. The reversal of 11289645 is 54698211.

11289645 is a `hidden beast` number, since 1 + 1 + 2 + 8 + 9 + 645 = 666.

It is not a de Polignac number, because 11289645 - 2⁷ = 11289517 is a prime.

It is a super-3 number, since 3×11289645³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11289647) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32362 + ... + 32708.

It is an arithmetic number, because the mean of its divisors is an integer number (631620).

Almost surely, 2^11289645 is an apocalyptic number.

11289645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11289645 is a deficient number, since it is larger than the sum of its proper divisors (8922195).

11289645 is a wasteful number, since it uses less digits than its factorization.

11289645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 602 (or 596 counting only the distinct ones).

The product of its digits is 17280, while the sum is 36.

The square root of 11289645 is about 3360.0066964219. The cubic root of 11289645 is about 224.3331365891. Note that the first 3 decimals are identical.

The spelling of 11289645 in words is "eleven million, two hundred eighty-nine thousand, six hundred forty-five".