11428724 has 6 divisors (see below), whose sum is σ = 20000274. Its totient is φ = 5714360.

The previous prime is 11428721. The next prime is 11428733. The reversal of 11428724 is 42782411.

It can be written as a sum of positive squares in only one way, i.e., 11356900 + 71824 = 3370^2 + 268^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11428721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428587 + ... + 1428594.

It is an arithmetic number, because the mean of its divisors is an integer number (3333379).

Almost surely, 2^11428724 is an apocalyptic number.

It is an amenable number.

11428724 is a deficient number, since it is larger than the sum of its proper divisors (8571550).

11428724 is a wasteful number, since it uses less digits than its factorization.

11428724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2857185 (or 2857183 counting only the distinct ones).

The product of its digits is 3584, while the sum is 29.

The square root of 11428724 is about 3380.6395844574. The cubic root of 11428724 is about 225.2505784449.

The spelling of 11428724 in words is "eleven million, four hundred twenty-eight thousand, seven hundred twenty-four".