28464361809 has 8 divisors (see below), whose sum is σ = 40871904192. Its totient is φ = 17516530320.

The previous prime is 28464361787. The next prime is 28464361817. The reversal of 28464361809 is 90816346482.

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

It is not a de Polignac number, because 28464361809 - 2³³ = 19874427217 is a prime.

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 not an unprimeable number, because it can be changed into a prime (28464381809) 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, 364927677 + ... + 364927754.

It is an arithmetic number, because the mean of its divisors is an integer number (5108988024).

Almost surely, 2^28464361809 is an apocalyptic number.

It is an amenable number.

28464361809 is a deficient number, since it is larger than the sum of its proper divisors (12407542383).

28464361809 is a wasteful number, since it uses less digits than its factorization.

28464361809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729855447.

The product of its (nonzero) digits is 1990656, while the sum is 51.

The spelling of 28464361809 in words is "twenty-eight billion, four hundred sixty-four million, three hundred sixty-one thousand, eight hundred nine".