11345728 has 28 divisors (see below), whose sum is σ = 23294340. Its totient is φ = 5476352.

The previous prime is 11345723. The next prime is 11345731. The reversal of 11345728 is 82754311.

It can be written as a sum of positive squares in 2 ways, for example, as 6110784 + 5234944 = 2472^2 + 2288^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 11345728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11345723) 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 3 ways as a sum of consecutive naturals, for example, 1201 + ... + 4912.

Almost surely, 2^11345728 is an apocalyptic number.

It is an amenable number.

11345728 is an abundant number, since it is smaller than the sum of its proper divisors (11948612).

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

11345728 is an equidigital number, since it uses as much as digits as its factorization.

11345728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6154 (or 6144 counting only the distinct ones).

The product of its digits is 6720, while the sum is 31.

The square root of 11345728 is about 3368.3420253888. The cubic root of 11345728 is about 224.7039926400.

The spelling of 11345728 in words is "eleven million, three hundred forty-five thousand, seven hundred twenty-eight".