28713479433 has 8 divisors (see below), whose sum is σ = 38351925600. Its totient is φ = 19108676448.

The previous prime is 28713479429. The next prime is 28713479461. The reversal of 28713479433 is 33497431782.

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

It is not a de Polignac number, because 28713479433 - 2² = 28713479429 is a prime.

It is a super-2 number, since 2×28713479433² (a number of 22 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28713479033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8408803 + ... + 8412216.

It is an arithmetic number, because the mean of its divisors is an integer number (4793990700).

Almost surely, 2^28713479433 is an apocalyptic number.

It is an amenable number.

28713479433 is a deficient number, since it is larger than the sum of its proper divisors (9638446167).

28713479433 is a wasteful number, since it uses less digits than its factorization.

28713479433 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16821591.

The product of its digits is 3048192, while the sum is 51.

The spelling of 28713479433 in words is "twenty-eight billion, seven hundred thirteen million, four hundred seventy-nine thousand, four hundred thirty-three".