28834437481 has 4 divisors (see below), whose sum is σ = 28835998864. Its totient is φ = 28832876100.

The previous prime is 28834437421. The next prime is 28834437649. The reversal of 28834437481 is 18473443882.

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 28834437481 - 2¹⁹ = 28833913193 is a prime.

It is a super-2 number, since 2×28834437481² (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 (28834437421) 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, 752655 + ... + 790036.

It is an arithmetic number, because the mean of its divisors is an integer number (7208999716).

Almost surely, 2^28834437481 is an apocalyptic number.

It is an amenable number.

28834437481 is a deficient number, since it is larger than the sum of its proper divisors (1561383).

28834437481 is a wasteful number, since it uses less digits than its factorization.

28834437481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1561382.

The product of its digits is 4128768, while the sum is 52.

The spelling of 28834437481 in words is "twenty-eight billion, eight hundred thirty-four million, four hundred thirty-seven thousand, four hundred eighty-one".