28861524419 has 24 divisors (see below), whose sum is σ = 37596925440. Its totient is φ = 21633607008.

The previous prime is 28861524413. The next prime is 28861524443. The reversal of 28861524419 is 91442516882.

It is not a de Polignac number, because 28861524419 - 2¹⁶ = 28861458883 is a prime.

It is a super-2 number, since 2×28861524419² (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 (28861524413) 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 23 ways as a sum of consecutive naturals, for example, 619547 + ... + 664500.

It is an arithmetic number, because the mean of its divisors is an integer number (1566538560).

Almost surely, 2^28861524419 is an apocalyptic number.

28861524419 is a deficient number, since it is larger than the sum of its proper divisors (8735401021).

28861524419 is a wasteful number, since it uses less digits than its factorization.

28861524419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1284099 (or 1284086 counting only the distinct ones).

The product of its digits is 1105920, while the sum is 50.

The spelling of 28861524419 in words is "twenty-eight billion, eight hundred sixty-one million, five hundred twenty-four thousand, four hundred nineteen".