28424437917 has 8 divisors (see below), whose sum is σ = 37903197696. Its totient is φ = 18947651712.

The previous prime is 28424437861. The next prime is 28424437933. The reversal of 28424437917 is 71973442482.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28424437917 - 2²⁸ = 28156002461 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 28424437917.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28424432917) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 459453 + ... + 517634.

It is an arithmetic number, because the mean of its divisors is an integer number (4737899712).

Almost surely, 2^28424437917 is an apocalyptic number.

It is an amenable number.

28424437917 is a deficient number, since it is larger than the sum of its proper divisors (9478759779).

28424437917 is an equidigital number, since it uses as much as digits as its factorization.

28424437917 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986787.

The product of its digits is 2709504, while the sum is 51.

The spelling of 28424437917 in words is "twenty-eight billion, four hundred twenty-four million, four hundred thirty-seven thousand, nine hundred seventeen".