11722280 has 32 divisors (see below), whose sum is σ = 26511840. Its totient is φ = 4664640.

The previous prime is 11722201. The next prime is 11722283. The reversal of 11722280 is 8222711.

11722280 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (11722283) 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, 8435 + ... + 9725.

It is an arithmetic number, because the mean of its divisors is an integer number (828495).

Almost surely, 2^11722280 is an apocalyptic number.

11722280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11722280 is an abundant number, since it is smaller than the sum of its proper divisors (14789560).

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

11722280 is a wasteful number, since it uses less digits than its factorization.

11722280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1529 (or 1525 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 11722280 is about 3423.7815350866. The cubic root of 11722280 is about 227.1628786968.

Adding to 11722280 its reverse (8222711), we get a palindrome (19944991).

The spelling of 11722280 in words is "eleven million, seven hundred twenty-two thousand, two hundred eighty".