11490320 has 20 divisors (see below), whose sum is σ = 26715180. Its totient is φ = 4596096.

The previous prime is 11490319. The next prime is 11490343. The reversal of 11490320 is 2309411.

It can be written as a sum of positive squares in 2 ways, for example, as 6310144 + 5180176 = 2512^2 + 2276^2 .

It is a tau number, because it is divible by the number of its divisors (20).

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 = 11490292 and 11490301.

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, 71735 + ... + 71894.

It is an arithmetic number, because the mean of its divisors is an integer number (1335759).

Almost surely, 2^11490320 is an apocalyptic number.

11490320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11490320 is an abundant number, since it is smaller than the sum of its proper divisors (15224860).

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

11490320 is a wasteful number, since it uses less digits than its factorization.

11490320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143642 (or 143636 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

The square root of 11490320 is about 3389.7374529600. The cubic root of 11490320 is about 225.6545221407.

Adding to 11490320 its reverse (2309411), we get a palindrome (13799731).

The spelling of 11490320 in words is "eleven million, four hundred ninety thousand, three hundred twenty".