11220240 has 40 divisors (see below), whose sum is σ = 34783488. Its totient is φ = 2992000.

The previous prime is 11220227. The next prime is 11220247. The reversal of 11220240 is 4202211.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (11220247) 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, 23136 + ... + 23615.

Almost surely, 2^11220240 is an apocalyptic number.

11220240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11220240 is an abundant number, since it is smaller than the sum of its proper divisors (23563248).

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

11220240 is a wasteful number, since it uses less digits than its factorization.

11220240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46767 (or 46761 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

The square root of 11220240 is about 3349.6626695833. The cubic root of 11220240 is about 223.8724826936.

Adding to 11220240 its reverse (4202211), we get a palindrome (15422451).

The spelling of 11220240 in words is "eleven million, two hundred twenty thousand, two hundred forty".