28316432573 has 16 divisors (see below), whose sum is σ = 33459181056. Its totient is φ = 23624667840.

The previous prime is 28316432567. The next prime is 28316432707. The reversal of 28316432573 is 37523461382.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 28316432573 - 2¹⁸ = 28316170429 is a prime.

It is a super-2 number, since 2×28316432573² (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 (28316432513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 547565 + ... + 597042.

It is an arithmetic number, because the mean of its divisors is an integer number (2091198816).

Almost surely, 2^28316432573 is an apocalyptic number.

It is an amenable number.

28316432573 is a deficient number, since it is larger than the sum of its proper divisors (5142748483).

28316432573 is a wasteful number, since it uses less digits than its factorization.

28316432573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1144804.

The product of its digits is 725760, while the sum is 44.

The spelling of 28316432573 in words is "twenty-eight billion, three hundred sixteen million, four hundred thirty-two thousand, five hundred seventy-three".