28712925810 has 192 divisors, whose sum is σ = 78685102080. Its totient is φ = 7263333504.

The previous prime is 28712925809. The next prime is 28712925821. The reversal of 28712925810 is 1852921782.

28712925810 is a `hidden beast` number, since 287 + 1 + 292 + 5 + 81 + 0 = 666.

It is a super-2 number, since 2×28712925810² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 226085967 + ... + 226086093.

It is an arithmetic number, because the mean of its divisors is an integer number (409818240).

Almost surely, 2^28712925810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28712925810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (39342551040).

28712925810 is an abundant number, since it is smaller than the sum of its proper divisors (49972176270).

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

28712925810 is a wasteful number, since it uses less digits than its factorization.

28712925810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330 (or 269 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 45.

The spelling of 28712925810 in words is "twenty-eight billion, seven hundred twelve million, nine hundred twenty-five thousand, eight hundred ten".