28358355673 has 16 divisors (see below), whose sum is σ = 30178424016. Its totient is φ = 26555351040.

The previous prime is 28358355667. The next prime is 28358355691. The reversal of 28358355673 is 37655385382.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 2576273049 + 25782082624 = 50757^2 + 160568^2 .

It is a cyclic number.

It is not a de Polignac number, because 28358355673 - 2⁹ = 28358355161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28358355973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8558065 + ... + 8561377.

It is an arithmetic number, because the mean of its divisors is an integer number (1886151501).

Almost surely, 2^28358355673 is an apocalyptic number.

It is an amenable number.

28358355673 is a deficient number, since it is larger than the sum of its proper divisors (1820068343).

28358355673 is a wasteful number, since it uses less digits than its factorization.

28358355673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5724.

The product of its digits is 18144000, while the sum is 55.

The spelling of 28358355673 in words is "twenty-eight billion, three hundred fifty-eight million, three hundred fifty-five thousand, six hundred seventy-three".