28538058 has 8 divisors (see below), whose sum is σ = 57076128. Its totient is φ = 9512684.

The previous prime is 28538033. The next prime is 28538093. The reversal of 28538058 is 85083582.

It is a sphenic number, since it is the product of 3 distinct primes.

28538058 is an admirable number.

It is a super-3 number, since 3×28538058³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2378166 + ... + 2378177.

It is an arithmetic number, because the mean of its divisors is an integer number (7134516).

Almost surely, 2^28538058 is an apocalyptic number.

28538058 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28538058 is a wasteful number, since it uses less digits than its factorization.

28538058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4756348.

The product of its (nonzero) digits is 76800, while the sum is 39.

The square root of 28538058 is about 5342.1023951250. The cubic root of 28538058 is about 305.5916420532.

The spelling of 28538058 in words is "twenty-eight million, five hundred thirty-eight thousand, fifty-eight".