28364478367 has 4 divisors (see below), whose sum is σ = 28522939320. Its totient is φ = 28206017416.

The previous prime is 28364478313. The next prime is 28364478431. The reversal of 28364478367 is 76387446382.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28364478367 - 2³¹ = 26216994719 is a prime.

It is a super-3 number, since 3×28364478367³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (58) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28364470367) 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, 79230208 + ... + 79230565.

It is an arithmetic number, because the mean of its divisors is an integer number (7130734830).

Almost surely, 2^28364478367 is an apocalyptic number.

28364478367 is a deficient number, since it is larger than the sum of its proper divisors (158460953).

28364478367 is a wasteful number, since it uses less digits than its factorization.

28364478367 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158460952.

The product of its digits is 32514048, while the sum is 58.

The spelling of 28364478367 in words is "twenty-eight billion, three hundred sixty-four million, four hundred seventy-eight thousand, three hundred sixty-seven".