11520728 has 16 divisors (see below), whose sum is σ = 21876000. Its totient is φ = 5687136.

The previous prime is 11520709. The next prime is 11520739. The reversal of 11520728 is 82702511.

It is a junction number, because it is equal to n+sod(n) for n = 11520697 and 11520706.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8483 + ... + 9746.

It is an arithmetic number, because the mean of its divisors is an integer number (1367250).

Almost surely, 2^11520728 is an apocalyptic number.

It is an amenable number.

11520728 is a deficient number, since it is larger than the sum of its proper divisors (10355272).

11520728 is a wasteful number, since it uses less digits than its factorization.

11520728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18314 (or 18310 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 26.

The square root of 11520728 is about 3394.2197925296. The cubic root of 11520728 is about 225.8534042912.

It can be divided in two parts, 11520 and 728, that multiplied together give a triangular number (8386560 = T₄₀₉₅).

The spelling of 11520728 in words is "eleven million, five hundred twenty thousand, seven hundred twenty-eight".