11071728 has 50 divisors (see below), whose sum is σ = 32048544. Its totient is φ = 3690144.

The previous prime is 11071703. The next prime is 11071741. The reversal of 11071728 is 82717011.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

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 9 ways as a sum of consecutive naturals, for example, 2976 + ... + 5567.

Almost surely, 2^11071728 is an apocalyptic number.

11071728 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

11071728 is an abundant number, since it is smaller than the sum of its proper divisors (20976816).

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

11071728 is an equidigital number, since it uses as much as digits as its factorization.

11071728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8563 (or 8548 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 27.

The square root of 11071728 is about 3327.4206226445. The cubic root of 11071728 is about 222.8803610636.

Adding to 11071728 its reverse (82717011), we get a palindrome (93788739).

The spelling of 11071728 in words is "eleven million, seventy-one thousand, seven hundred twenty-eight".