28300213481 has 4 divisors (see below), whose sum is σ = 28391211264. Its totient is φ = 28209215700.

The previous prime is 28300213453. The next prime is 28300213483. The reversal of 28300213481 is 18431200382.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 28300213481 - 2²² = 28296019177 is a prime.

It is a super-2 number, since 2×28300213481² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28300213483) 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, 45498425 + ... + 45499046.

It is an arithmetic number, because the mean of its divisors is an integer number (7097802816).

Almost surely, 2^28300213481 is an apocalyptic number.

It is an amenable number.

28300213481 is a deficient number, since it is larger than the sum of its proper divisors (90997783).

28300213481 is an equidigital number, since it uses as much as digits as its factorization.

28300213481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90997782.

The product of its (nonzero) digits is 9216, while the sum is 32.

The spelling of 28300213481 in words is "twenty-eight billion, three hundred million, two hundred thirteen thousand, four hundred eighty-one".