11238728 has 16 divisors (see below), whose sum is σ = 22182000. Its totient is φ = 5323536.

The previous prime is 11238727. The next prime is 11238737. The reversal of 11238728 is 82783211.

It is a junction number, because it is equal to n+sod(n) for n = 11238694 and 11238703.

It is not an unprimeable number, because it can be changed into a prime (11238727) 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 in 3 ways as a sum of consecutive naturals, for example, 36818 + ... + 37121.

It is an arithmetic number, because the mean of its divisors is an integer number (1386375).

Almost surely, 2^11238728 is an apocalyptic number.

It is an amenable number.

11238728 is a deficient number, since it is larger than the sum of its proper divisors (10943272).

11238728 is a wasteful number, since it uses less digits than its factorization.

11238728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73964 (or 73960 counting only the distinct ones).

The product of its digits is 5376, while the sum is 32.

The square root of 11238728 is about 3352.4212145851. The cubic root of 11238728 is about 223.9953761801.

The spelling of 11238728 in words is "eleven million, two hundred thirty-eight thousand, seven hundred twenty-eight".