28151067648 has 176 divisors, whose sum is σ = 82204899840. Its totient is φ = 8494080000.

The previous prime is 28151067619. The next prime is 28151067671. The reversal of 28151067648 is 84676015182.

It is a tau number, because it is divible by the number of its divisors (176).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 28151067597 and 28151067606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8480133 + ... + 8483451.

Almost surely, 2^28151067648 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 28151067648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41102449920).

28151067648 is an abundant number, since it is smaller than the sum of its proper divisors (54053832192).

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

28151067648 is a wasteful number, since it uses less digits than its factorization.

28151067648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3604 (or 3586 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 48.

The spelling of 28151067648 in words is "twenty-eight billion, one hundred fifty-one million, sixty-seven thousand, six hundred forty-eight".