11145380 has 12 divisors (see below), whose sum is σ = 23405340. Its totient is φ = 4458144.

The previous prime is 11145377. The next prime is 11145391. The reversal of 11145380 is 8354111.

It can be written as a sum of positive squares in 2 ways, for example, as 3833764 + 7311616 = 1958^2 + 2704^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278615 + ... + 278654.

It is an arithmetic number, because the mean of its divisors is an integer number (1950445).

Almost surely, 2^11145380 is an apocalyptic number.

11145380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11145380 is an abundant number, since it is smaller than the sum of its proper divisors (12259960).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11145380 is a wasteful number, since it uses less digits than its factorization.

11145380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 557278 (or 557276 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 11145380 is about 3338.4697093129. The cubic root of 11145380 is about 223.3734884853.

Adding to 11145380 its reverse (8354111), we get a palindrome (19499491).

The spelling of 11145380 in words is "eleven million, one hundred forty-five thousand, three hundred eighty".