28730148 has 24 divisors (see below), whose sum is σ = 67126752. Its totient is φ = 9563904.

The previous prime is 28730131. The next prime is 28730161. The reversal of 28730148 is 84103782.

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, 13236 + ... + 15252.

It is an arithmetic number, because the mean of its divisors is an integer number (2796948).

Almost surely, 2^28730148 is an apocalyptic number.

It is an amenable number.

28730148 is an abundant number, since it is smaller than the sum of its proper divisors (38396604).

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

28730148 is a wasteful number, since it uses less digits than its factorization.

28730148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3211 (or 3209 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 28730148 is about 5360.0511191592. The cubic root of 28730148 is about 306.2757563788.

The spelling of 28730148 in words is "twenty-eight million, seven hundred thirty thousand, one hundred forty-eight".