28858146 has 32 divisors (see below), whose sum is σ = 63773568. Its totient is φ = 8659200.

The previous prime is 28858133. The next prime is 28858157. The reversal of 28858146 is 64185882.

It is a junction number, because it is equal to n+sod(n) for n = 28858098 and 28858107.

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, 3805 + ... + 8496.

It is an arithmetic number, because the mean of its divisors is an integer number (1992924).

Almost surely, 2^28858146 is an apocalyptic number.

28858146 is an abundant number, since it is smaller than the sum of its proper divisors (34915422).

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

28858146 is a wasteful number, since it uses less digits than its factorization.

28858146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12346.

The product of its digits is 122880, while the sum is 42.

The square root of 28858146 is about 5371.9778480556. The cubic root of 28858146 is about 306.7299205271.

The spelling of 28858146 in words is "twenty-eight million, eight hundred fifty-eight thousand, one hundred forty-six".