28915919060 has 96 divisors (see below), whose sum is σ = 70712974080. Its totient is φ = 9727027200.

The previous prime is 28915919009. The next prime is 28915919083. The reversal of 28915919060 is 6091951982.

It is a super-2 number, since 2×28915919060² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 3574220 + ... + 3582300.

It is an arithmetic number, because the mean of its divisors is an integer number (736593480).

Almost surely, 2^28915919060 is an apocalyptic number.

28915919060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28915919060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35356487040).

28915919060 is an abundant number, since it is smaller than the sum of its proper divisors (41797055020).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28915919060 is a wasteful number, since it uses less digits than its factorization.

28915919060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8577 (or 8575 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 50.

The spelling of 28915919060 in words is "twenty-eight billion, nine hundred fifteen million, nine hundred nineteen thousand, sixty".