28520367263 has 4 divisors (see below), whose sum is σ = 28520781888. Its totient is φ = 28519952640.

The previous prime is 28520367251. The next prime is 28520367311. The reversal of 28520367263 is 36276302582.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 28520367263 - 2¹⁶ = 28520301727 is a prime.

It is a super-2 number, since 2×28520367263² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28520367163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76706 + ... + 250847.

It is an arithmetic number, because the mean of its divisors is an integer number (7130195472).

Almost surely, 2^28520367263 is an apocalyptic number.

28520367263 is a deficient number, since it is larger than the sum of its proper divisors (414625).

28520367263 is an equidigital number, since it uses as much as digits as its factorization.

28520367263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414624.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 28520367263 in words is "twenty-eight billion, five hundred twenty million, three hundred sixty-seven thousand, two hundred sixty-three".