28874426385737 has 8 divisors (see below), whose sum is σ = 28987139277096. Its totient is φ = 28761716293632.

The previous prime is 28874426385641. The next prime is 28874426385751. The reversal of 28874426385737 is 73758362447882.

It can be written as a sum of positive squares in 4 ways, for example, as 8414762474041 + 20459663911696 = 2900821^2 + 4523236^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28874426385737 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28874426385787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21319913 + ... + 22633769.

It is an arithmetic number, because the mean of its divisors is an integer number (3623392409637).

Almost surely, 2^{28874426385737} is an apocalyptic number.

It is an amenable number.

28874426385737 is a deficient number, since it is larger than the sum of its proper divisors (112712891359).

28874426385737 is a wasteful number, since it uses less digits than its factorization.

28874426385737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1399627.

The product of its digits is 3034644480, while the sum is 74.

The spelling of 28874426385737 in words is "twenty-eight trillion, eight hundred seventy-four billion, four hundred twenty-six million, three hundred eighty-five thousand, seven hundred thirty-seven".