28530158 has 8 divisors (see below), whose sum is σ = 43520760. Its totient is φ = 14023240.

The previous prime is 28530149. The next prime is 28530181. The reversal of 28530158 is 85103582.

It is a happy number.

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

It is a congruent number.

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, 120773 + ... + 121008.

It is an arithmetic number, because the mean of its divisors is an integer number (5440095).

Almost surely, 2^28530158 is an apocalyptic number.

28530158 is a deficient number, since it is larger than the sum of its proper divisors (14990602).

28530158 is a wasteful number, since it uses less digits than its factorization.

28530158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241842.

The product of its (nonzero) digits is 9600, while the sum is 32.

The square root of 28530158 is about 5341.3629346825. The cubic root of 28530158 is about 305.5634411531.

The spelling of 28530158 in words is "twenty-eight million, five hundred thirty thousand, one hundred fifty-eight".