28520462999 has 4 divisors (see below), whose sum is σ = 32594814864. Its totient is φ = 24446111136.

The previous prime is 28520462987. The next prime is 28520463053. The reversal of 28520462999 is 99926402582.

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 28520462999 - 2²⁰ = 28519414423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28520462909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2037175922 + ... + 2037175935.

It is an arithmetic number, because the mean of its divisors is an integer number (8148703716).

Almost surely, 2^28520462999 is an apocalyptic number.

28520462999 is a deficient number, since it is larger than the sum of its proper divisors (4074351865).

28520462999 is an equidigital number, since it uses as much as digits as its factorization.

28520462999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4074351864.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 28520462999 in words is "twenty-eight billion, five hundred twenty million, four hundred sixty-two thousand, nine hundred ninety-nine".