28790561361 has 8 divisors (see below), whose sum is σ = 40645498464. Its totient is φ = 18064665920.

The previous prime is 28790561347. The next prime is 28790561381. The reversal of 28790561361 is 16316509782.

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

It is a cyclic number.

It is not a de Polignac number, because 28790561361 - 2¹⁵ = 28790528593 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28790561361.

It is not an unprimeable number, because it can be changed into a prime (28790561381) 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, 282260355 + ... + 282260456.

It is an arithmetic number, because the mean of its divisors is an integer number (5080687308).

Almost surely, 2^28790561361 is an apocalyptic number.

It is an amenable number.

28790561361 is a deficient number, since it is larger than the sum of its proper divisors (11854937103).

28790561361 is a wasteful number, since it uses less digits than its factorization.

28790561361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 564520831.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 28790561361 in words is "twenty-eight billion, seven hundred ninety million, five hundred sixty-one thousand, three hundred sixty-one".