11728456 has 8 divisors (see below), whose sum is σ = 21990870. Its totient is φ = 5864224.

The previous prime is 11728439. The next prime is 11728523. The reversal of 11728456 is 65482711.

11728456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 9672100 + 2056356 = 3110^2 + 1434^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 733021 + ... + 733036.

Almost surely, 2^11728456 is an apocalyptic number.

It is an amenable number.

11728456 is a deficient number, since it is larger than the sum of its proper divisors (10262414).

11728456 is a wasteful number, since it uses less digits than its factorization.

11728456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1466063 (or 1466059 counting only the distinct ones).

The product of its digits is 13440, while the sum is 34.

The square root of 11728456 is about 3424.6833430260. The cubic root of 11728456 is about 227.2027660346.

The spelling of 11728456 in words is "eleven million, seven hundred twenty-eight thousand, four hundred fifty-six".