28660948992 has 336 divisors, whose sum is σ = 94460446080. Its totient is φ = 8295284736.

The previous prime is 28660948973. The next prime is 28660948993. The reversal of 28660948992 is 29984906682.

28660948992 is a `hidden beast` number, since 2 + 8 + 6 + 60 + 9 + 489 + 92 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28660948993) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16293009 + ... + 16294767.

It is an arithmetic number, because the mean of its divisors is an integer number (281132280).

Almost surely, 2^28660948992 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 28660948992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47230223040).

28660948992 is an abundant number, since it is smaller than the sum of its proper divisors (65799497088).

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

28660948992 is a wasteful number, since it uses less digits than its factorization.

28660948992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1821 (or 1794 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 63.

The spelling of 28660948992 in words is "twenty-eight billion, six hundred sixty million, nine hundred forty-eight thousand, nine hundred ninety-two".