28730058 has 32 divisors (see below), whose sum is σ = 66102144. Its totient is φ = 8154432.

The previous prime is 28730057. The next prime is 28730077. The reversal of 28730058 is 85003782.

It is not an unprimeable number, because it can be changed into a prime (28730057) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4416 + ... + 8772.

It is an arithmetic number, because the mean of its divisors is an integer number (2065692).

Almost surely, 2^28730058 is an apocalyptic number.

28730058 is an abundant number, since it is smaller than the sum of its proper divisors (37372086).

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

28730058 is a wasteful number, since it uses less digits than its factorization.

28730058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4526.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 28730058 is about 5360.0427237103. The cubic root of 28730058 is about 306.2754365656.

The spelling of 28730058 in words is "twenty-eight million, seven hundred thirty thousand, fifty-eight".