11728828 has 12 divisors (see below), whose sum is σ = 20652520. Its totient is φ = 5828112.

The previous prime is 11728817. The next prime is 11728841. The reversal of 11728828 is 82882711.

It is a super-3 number, since 3×11728828³ (a number of 22 digits) contains 333 as substring.

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, 8343 + ... + 9646.

Almost surely, 2^11728828 is an apocalyptic number.

It is an amenable number.

11728828 is a deficient number, since it is larger than the sum of its proper divisors (8923692).

11728828 is a wasteful number, since it uses less digits than its factorization.

11728828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18156 (or 18154 counting only the distinct ones).

The product of its digits is 14336, while the sum is 37.

The square root of 11728828 is about 3424.7376541861. The cubic root of 11728828 is about 227.2051681278.

It can be divided in two parts, 1172 and 8828, that added together give a 4-th power (10000 = 10⁴).

The spelling of 11728828 in words is "eleven million, seven hundred twenty-eight thousand, eight hundred twenty-eight".