11447220 has 24 divisors (see below), whose sum is σ = 32052384. Its totient is φ = 3052576.

The previous prime is 11447213. The next prime is 11447243. The reversal of 11447220 is 2274411.

It is a happy number.

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, 95334 + ... + 95453.

It is an arithmetic number, because the mean of its divisors is an integer number (1335516).

Almost surely, 2^11447220 is an apocalyptic number.

11447220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11447220 is an abundant number, since it is smaller than the sum of its proper divisors (20605164).

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

11447220 is a wasteful number, since it uses less digits than its factorization.

11447220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190799 (or 190797 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 11447220 is about 3383.3740555842. The cubic root of 11447220 is about 225.3720265086.

The spelling of 11447220 in words is "eleven million, four hundred forty-seven thousand, two hundred twenty".