11730220 has 24 divisors (see below), whose sum is σ = 25930800. Its totient is φ = 4444992.

The previous prime is 11730209. The next prime is 11730233. The reversal of 11730220 is 2203711.

It is a happy number.

It is a super-2 number, since 2×11730220² = 275196122496800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11730194 and 11730203.

It is a congruent number.

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, 15055 + ... + 15814.

It is an arithmetic number, because the mean of its divisors is an integer number (1080450).

Almost surely, 2^11730220 is an apocalyptic number.

11730220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11730220 is an abundant number, since it is smaller than the sum of its proper divisors (14200580).

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

11730220 is a wasteful number, since it uses less digits than its factorization.

11730220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30897 (or 30895 counting only the distinct ones).

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 11730220 is about 3424.9408754021. The cubic root of 11730220 is about 227.2141561552.

Adding to 11730220 its reverse (2203711), we get a palindrome (13933931).

The spelling of 11730220 in words is "eleven million, seven hundred thirty thousand, two hundred twenty".