28730287146 has 16 divisors (see below), whose sum is σ = 62684263008. Its totient is φ = 8706147600.

The previous prime is 28730287129. The next prime is 28730287193. The reversal of 28730287146 is 64178203782.

It is a super-2 number, since 2×28730287146² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28730287095 and 28730287104.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217653625 + ... + 217653756.

It is an arithmetic number, because the mean of its divisors is an integer number (3917766438).

Almost surely, 2^28730287146 is an apocalyptic number.

28730287146 is an abundant number, since it is smaller than the sum of its proper divisors (33953975862).

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

28730287146 is a wasteful number, since it uses less digits than its factorization.

28730287146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435307397.

The product of its (nonzero) digits is 903168, while the sum is 48.

The spelling of 28730287146 in words is "twenty-eight billion, seven hundred thirty million, two hundred eighty-seven thousand, one hundred forty-six".