11722812 has 24 divisors (see below), whose sum is σ = 27409536. Its totient is φ = 3899568.

The previous prime is 11722811. The next prime is 11722817. The reversal of 11722812 is 21822711.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11722811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9283 + ... + 10469.

It is an arithmetic number, because the mean of its divisors is an integer number (1142064).

Almost surely, 2^11722812 is an apocalyptic number.

11722812 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11722812 is an abundant number, since it is smaller than the sum of its proper divisors (15686724).

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

11722812 is a wasteful number, since it uses less digits than its factorization.

11722812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2017 (or 2015 counting only the distinct ones).

The product of its digits is 448, while the sum is 24.

The square root of 11722812 is about 3423.8592260781. The cubic root of 11722812 is about 227.1663151393.

The spelling of 11722812 in words is "eleven million, seven hundred twenty-two thousand, eight hundred twelve".