28512302545 has 16 divisors (see below), whose sum is σ = 36069931008. Its totient is φ = 21604374720.

The previous prime is 28512302531. The next prime is 28512302549. The reversal of 28512302545 is 54520321582.

It is not a de Polignac number, because 28512302545 - 2⁹ = 28512302033 is a prime.

It is a super-2 number, since 2×28512302545² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28512302549) 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, 1949634 + ... + 1964203.

It is an arithmetic number, because the mean of its divisors is an integer number (2254370688).

Almost surely, 2^28512302545 is an apocalyptic number.

It is an amenable number.

28512302545 is a deficient number, since it is larger than the sum of its proper divisors (7557628463).

28512302545 is a wasteful number, since it uses less digits than its factorization.

28512302545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3913920.

The product of its (nonzero) digits is 96000, while the sum is 37.

The spelling of 28512302545 in words is "twenty-eight billion, five hundred twelve million, three hundred two thousand, five hundred forty-five".