28915108244 has 24 divisors (see below), whose sum is σ = 56693507808. Its totient is φ = 12788007840.

The previous prime is 28915108231. The next prime is 28915108247. The reversal of 28915108244 is 44280151982.

It is a super-3 number, since 3×28915108244³ (a number of 32 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a junction number, because it is equal to n+sod(n) for n = 28915108195 and 28915108204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28915108247) 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 7 ways as a sum of consecutive naturals, for example, 8878934 + ... + 8882189.

It is an arithmetic number, because the mean of its divisors is an integer number (2362229492).

Almost surely, 2^28915108244 is an apocalyptic number.

It is an amenable number.

28915108244 is a deficient number, since it is larger than the sum of its proper divisors (27778399564).

28915108244 is a wasteful number, since it uses less digits than its factorization.

28915108244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17761175 (or 17761173 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 28915108244 in words is "twenty-eight billion, nine hundred fifteen million, one hundred eight thousand, two hundred forty-four".