11351220 has 24 divisors (see below), whose sum is σ = 31783584. Its totient is φ = 3026976.

The previous prime is 11351191. The next prime is 11351237. The reversal of 11351220 is 2215311.

11351220 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 11351220.

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, 94534 + ... + 94653.

It is an arithmetic number, because the mean of its divisors is an integer number (1324316).

Almost surely, 2^11351220 is an apocalyptic number.

11351220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11351220 is an abundant number, since it is smaller than the sum of its proper divisors (20432364).

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

11351220 is a wasteful number, since it uses less digits than its factorization.

11351220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 189199 (or 189197 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 11351220 is about 3369.1571646333. The cubic root of 11351220 is about 224.7402434432.

Adding to 11351220 its reverse (2215311), we get a palindrome (13566531).

The spelling of 11351220 in words is "eleven million, three hundred fifty-one thousand, two hundred twenty".