28715990498816 has 80 divisors (see below), whose sum is σ = 57860018388480. Its totient is φ = 14236972646400.

The previous prime is 28715990498773. The next prime is 28715990498831. The reversal of 28715990498816 is 61889409951782.

It is a super-2 number, since 2×28715990498816² (a number of 28 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 (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116985620 + ... + 117230828.

It is an arithmetic number, because the mean of its divisors is an integer number (723250229856).

Almost surely, 2^{28715990498816} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28715990498816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28930009194240).

28715990498816 is an abundant number, since it is smaller than the sum of its proper divisors (29144027889664).

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

28715990498816 is a wasteful number, since it uses less digits than its factorization.

28715990498816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247155 (or 247139 counting only the distinct ones).

The product of its (nonzero) digits is 627056640, while the sum is 77.

The spelling of 28715990498816 in words is "twenty-eight trillion, seven hundred fifteen billion, nine hundred ninety million, four hundred ninety-eight thousand, eight hundred sixteen".