28610517540 has 192 divisors, whose sum is σ = 92651102208. Its totient is φ = 6519552000.

The previous prime is 28610517511. The next prime is 28610517563. The reversal of 28610517540 is 4571501682.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 14663565 + ... + 14665515.

It is an arithmetic number, because the mean of its divisors is an integer number (482557824).

Almost surely, 2^28610517540 is an apocalyptic number.

28610517540 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 28610517540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46325551104).

28610517540 is an abundant number, since it is smaller than the sum of its proper divisors (64040584668).

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

28610517540 is a wasteful number, since it uses less digits than its factorization.

28610517540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3298 (or 3296 counting only the distinct ones).

The product of its (nonzero) digits is 67200, while the sum is 39.

The spelling of 28610517540 in words is "twenty-eight billion, six hundred ten million, five hundred seventeen thousand, five hundred forty".