11215730 has 16 divisors (see below), whose sum is σ = 20266200. Its totient is φ = 4468992.

The previous prime is 11215727. The next prime is 11215739. The reversal of 11215730 is 3751211.

11215730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5707321 + 5508409 = 2389^2 + 2347^2 .

It is not an unprimeable number, because it can be changed into a prime (11215739) 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, 746 + ... + 4794.

Almost surely, 2^11215730 is an apocalyptic number.

11215730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11215730 is a deficient number, since it is larger than the sum of its proper divisors (9050470).

11215730 is a wasteful number, since it uses less digits than its factorization.

11215730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4333.

The product of its (nonzero) digits is 210, while the sum is 20.

The square root of 11215730 is about 3348.9893998041. The cubic root of 11215730 is about 223.8424833292.

Adding to 11215730 its reverse (3751211), we get a palindrome (14966941).

The spelling of 11215730 in words is "eleven million, two hundred fifteen thousand, seven hundred thirty".