11822728 has 16 divisors (see below), whose sum is σ = 22311180. Its totient is φ = 5873088.

The previous prime is 11822717. The next prime is 11822729. The reversal of 11822728 is 82722811.

It can be written as a sum of positive squares in 2 ways, for example, as 11009124 + 813604 = 3318^2 + 902^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11822728.

It is not an unprimeable number, because it can be changed into a prime (11822729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3451 + ... + 5962.

Almost surely, 2^11822728 is an apocalyptic number.

It is an amenable number.

11822728 is a deficient number, since it is larger than the sum of its proper divisors (10488452).

11822728 is a wasteful number, since it uses less digits than its factorization.

11822728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9576 (or 9572 counting only the distinct ones).

The product of its digits is 3584, while the sum is 31.

The square root of 11822728 is about 3438.4194043194. The cubic root of 11822728 is about 227.8098856362.

The spelling of 11822728 in words is "eleven million, eight hundred twenty-two thousand, seven hundred twenty-eight".