11728930 has 8 divisors (see below), whose sum is σ = 21112092. Its totient is φ = 4691568.

The previous prime is 11728921. The next prime is 11728931. The reversal of 11728930 is 3982711.

It can be written as a sum of positive squares in 2 ways, for example, as 10569001 + 1159929 = 3251^2 + 1077^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 11728892 and 11728901.

It is not an unprimeable number, because it can be changed into a prime (11728931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 586437 + ... + 586456.

Almost surely, 2^11728930 is an apocalyptic number.

11728930 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

11728930 is a deficient number, since it is larger than the sum of its proper divisors (9383162).

11728930 is a wasteful number, since it uses less digits than its factorization.

11728930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1172900.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 11728930 is about 3424.7525458053. The cubic root of 11728930 is about 227.2058267574.

The spelling of 11728930 in words is "eleven million, seven hundred twenty-eight thousand, nine hundred thirty".