11728473 has 4 divisors (see below), whose sum is σ = 15637968. Its totient is φ = 7818980.

The previous prime is 11728439. The next prime is 11728523. The reversal of 11728473 is 37482711.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11728473 - 2⁸ = 11728217 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11728273) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1954743 + ... + 1954748.

It is an arithmetic number, because the mean of its divisors is an integer number (3909492).

Almost surely, 2^11728473 is an apocalyptic number.

It is an amenable number.

11728473 is a deficient number, since it is larger than the sum of its proper divisors (3909495).

11728473 is an equidigital number, since it uses as much as digits as its factorization.

11728473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3909494.

The product of its digits is 9408, while the sum is 33.

The square root of 11728473 is about 3424.6858250064. The cubic root of 11728473 is about 227.2028758088.

The spelling of 11728473 in words is "eleven million, seven hundred twenty-eight thousand, four hundred seventy-three".