11380388 has 6 divisors (see below), whose sum is σ = 19915686. Its totient is φ = 5690192.

The previous prime is 11380387. The next prime is 11380393. The reversal of 11380388 is 88308311.

11380388 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 only one way, i.e., 11142244 + 238144 = 3338^2 + 488^2 .

It is not an unprimeable number, because it can be changed into a prime (11380387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1422545 + ... + 1422552.

It is an arithmetic number, because the mean of its divisors is an integer number (3319281).

Almost surely, 2^11380388 is an apocalyptic number.

It is an amenable number.

11380388 is a deficient number, since it is larger than the sum of its proper divisors (8535298).

11380388 is a wasteful number, since it uses less digits than its factorization.

11380388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2845101 (or 2845099 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 32.

The square root of 11380388 is about 3373.4830665056. The cubic root of 11380388 is about 224.9325756822.

Adding to 11380388 its reverse (88308311), we get a palindrome (99688699).

The spelling of 11380388 in words is "eleven million, three hundred eighty thousand, three hundred eighty-eight".