11247728 has 10 divisors (see below), whose sum is σ = 21792504. Its totient is φ = 5623856.

The previous prime is 11247683. The next prime is 11247739. The reversal of 11247728 is 82774211.

It is a happy number.

It is a super-2 number, since 2×11247728² = 253022770323968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11247694 and 11247703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 351476 + ... + 351507.

Almost surely, 2^11247728 is an apocalyptic number.

It is an amenable number.

11247728 is a deficient number, since it is larger than the sum of its proper divisors (10544776).

11247728 is an equidigital number, since it uses as much as digits as its factorization.

11247728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702991 (or 702985 counting only the distinct ones).

The product of its digits is 6272, while the sum is 32.

The square root of 11247728 is about 3353.7632593849. The cubic root of 11247728 is about 224.0551522359.

The spelling of 11247728 in words is "eleven million, two hundred forty-seven thousand, seven hundred twenty-eight".