28951494745 has 8 divisors (see below), whose sum is σ = 35939786760. Its totient is φ = 22362533760.

The previous prime is 28951494721. The next prime is 28951494749. The reversal of 28951494745 is 54749415982.

It can be written as a sum of positive squares in 4 ways, for example, as 55234624 + 28896260121 = 7432^2 + 169989^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28951494745 - 2¹¹ = 28951492697 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28951494745.

It is not an unprimeable number, because it can be changed into a prime (28951494749) 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 7 ways as a sum of consecutive naturals, for example, 99832596 + ... + 99832885.

It is an arithmetic number, because the mean of its divisors is an integer number (4492473345).

Almost surely, 2^28951494745 is an apocalyptic number.

It is an amenable number.

28951494745 is a deficient number, since it is larger than the sum of its proper divisors (6988292015).

28951494745 is a wasteful number, since it uses less digits than its factorization.

28951494745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199665515.

The product of its digits is 14515200, while the sum is 58.

The spelling of 28951494745 in words is "twenty-eight billion, nine hundred fifty-one million, four hundred ninety-four thousand, seven hundred forty-five".