11445320 has 32 divisors (see below), whose sum is σ = 26016120. Its totient is φ = 4531200.

The previous prime is 11445289. The next prime is 11445359. The reversal of 11445320 is 2354411.

It can be written as a sum of positive squares in 4 ways, for example, as 10876804 + 568516 = 3298^2 + 754^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 11445292 and 11445301.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2624 + ... + 5456.

Almost surely, 2^11445320 is an apocalyptic number.

11445320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11445320 is an abundant number, since it is smaller than the sum of its proper divisors (14570800).

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

11445320 is a wasteful number, since it uses less digits than its factorization.

11445320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2945 (or 2941 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 11445320 is about 3383.0932591343. The cubic root of 11445320 is about 225.3595567985.

Adding to 11445320 its reverse (2354411), we get a palindrome (13799731).

Subtracting from 11445320 its reverse (2354411), we obtain a palindrome (9090909).

The spelling of 11445320 in words is "eleven million, four hundred forty-five thousand, three hundred twenty".