11613220 has 24 divisors (see below), whose sum is σ = 25175808. Its totient is φ = 4495200.

The previous prime is 11613197. The next prime is 11613221. The reversal of 11613220 is 2231611.

It is a junction number, because it is equal to n+sod(n) for n = 11613194 and 11613203.

It is not an unprimeable number, because it can be changed into a prime (11613221) 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, 8746 + ... + 9985.

It is an arithmetic number, because the mean of its divisors is an integer number (1048992).

Almost surely, 2^11613220 is an apocalyptic number.

11613220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11613220 is an abundant number, since it is smaller than the sum of its proper divisors (13562588).

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

11613220 is a wasteful number, since it uses less digits than its factorization.

11613220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18771 (or 18769 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 11613220 is about 3407.8174833755. The cubic root of 11613220 is about 226.4562012165.

Adding to 11613220 its reverse (2231611), we get a palindrome (13844831).

The spelling of 11613220 in words is "eleven million, six hundred thirteen thousand, two hundred twenty".