28352578111 has 16 divisors (see below), whose sum is σ = 33513701760. Its totient is φ = 23646388320.

The previous prime is 28352578073. The next prime is 28352578151. The reversal of 28352578111 is 11187525382.

It is a cyclic number.

It is not a de Polignac number, because 28352578111 - 2¹⁹ = 28352053823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28352578151) 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, 584881 + ... + 631498.

It is an arithmetic number, because the mean of its divisors is an integer number (2094606360).

Almost surely, 2^28352578111 is an apocalyptic number.

28352578111 is a deficient number, since it is larger than the sum of its proper divisors (5161123649).

28352578111 is a wasteful number, since it uses less digits than its factorization.

28352578111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1216566.

The product of its digits is 134400, while the sum is 43.

The spelling of 28352578111 in words is "twenty-eight billion, three hundred fifty-two million, five hundred seventy-eight thousand, one hundred eleven".