28673003143 has 4 divisors (see below), whose sum is σ = 28698859080. Its totient is φ = 28647147208.

The previous prime is 28673003141. The next prime is 28673003173. The reversal of 28673003143 is 34130037682.

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 28673003143 - 2¹ = 28673003141 is a prime.

It is a super-2 number, since 2×28673003143² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28673003141) 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, 12926305 + ... + 12928522.

It is an arithmetic number, because the mean of its divisors is an integer number (7174714770).

Almost surely, 2^28673003143 is an apocalyptic number.

28673003143 is a deficient number, since it is larger than the sum of its proper divisors (25855937).

28673003143 is a wasteful number, since it uses less digits than its factorization.

28673003143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25855936.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 28673003143 in words is "twenty-eight billion, six hundred seventy-three million, three thousand, one hundred forty-three".