11289730 has 16 divisors (see below), whose sum is σ = 20460600. Its totient is φ = 4484992.

The previous prime is 11289721. The next prime is 11289731. The reversal of 11289730 is 3798211.

It can be written as a sum of positive squares in 4 ways, for example, as 2954961 + 8334769 = 1719^2 + 2887^2 .

It is a junction number, because it is equal to n+sod(n) for n = 11289692 and 11289701.

It is not an unprimeable number, because it can be changed into a prime (11289731) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2299 + ... + 5278.

Almost surely, 2^11289730 is an apocalyptic number.

11289730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11289730 is a deficient number, since it is larger than the sum of its proper divisors (9170870).

11289730 is a wasteful number, since it uses less digits than its factorization.

11289730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7733.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 11289730 is about 3360.0193451824. The cubic root of 11289730 is about 224.3336995908. Note that the first 3 decimals are identical.

The spelling of 11289730 in words is "eleven million, two hundred eighty-nine thousand, seven hundred thirty".