11220940 has 12 divisors (see below), whose sum is σ = 23564016. Its totient is φ = 4488368.

The previous prime is 11220931. The next prime is 11220991. The reversal of 11220940 is 4902211.

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, 280504 + ... + 280543.

It is an arithmetic number, because the mean of its divisors is an integer number (1963668).

Almost surely, 2^11220940 is an apocalyptic number.

11220940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220940 is an abundant number, since it is smaller than the sum of its proper divisors (12343076).

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

11220940 is a wasteful number, since it uses less digits than its factorization.

11220940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561056 (or 561054 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 11220940 is about 3349.7671560871. The cubic root of 11220940 is about 223.8771381936.

The spelling of 11220940 in words is "eleven million, two hundred twenty thousand, nine hundred forty".