11645320 has 32 divisors (see below), whose sum is σ = 26308800. Its totient is φ = 4639168.

The previous prime is 11645317. The next prime is 11645329. The reversal of 11645320 is 2354611.

It is a super-2 number, since 2×11645320² = 271226955804800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11645291 and 11645300.

It is not an unprimeable number, because it can be changed into a prime (11645329) 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, 13461 + ... + 14299.

It is an arithmetic number, because the mean of its divisors is an integer number (822150).

Almost surely, 2^11645320 is an apocalyptic number.

11645320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11645320 is an abundant number, since it is smaller than the sum of its proper divisors (14663480).

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

11645320 is a wasteful number, since it uses less digits than its factorization.

11645320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1193 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 11645320 is about 3412.5239925896. The cubic root of 11645320 is about 226.6646578061.

Adding to 11645320 its reverse (2354611), we get a palindrome (13999931).

The spelling of 11645320 in words is "eleven million, six hundred forty-five thousand, three hundred twenty".