28285058 has 4 divisors (see below), whose sum is σ = 42427590. Its totient is φ = 14142528.

The previous prime is 28285031. The next prime is 28285069. The reversal of 28285058 is 85058282.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 85058282 = 2 ⋅42529141.

It can be written as a sum of positive squares in only one way, i.e., 16056049 + 12229009 = 4007^2 + 3497^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7071263 + ... + 7071266.

Almost surely, 2^28285058 is an apocalyptic number.

28285058 is a deficient number, since it is larger than the sum of its proper divisors (14142532).

28285058 is a wasteful number, since it uses less digits than its factorization.

28285058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14142531.

The product of its (nonzero) digits is 51200, while the sum is 38.

The square root of 28285058 is about 5318.3698630313. The cubic root of 28285058 is about 304.6859007744.

The spelling of 28285058 in words is "twenty-eight million, two hundred eighty-five thousand, fifty-eight".