28550858 has 16 divisors (see below), whose sum is σ = 49222080. Its totient is φ = 12166656.

The previous prime is 28550849. The next prime is 28550869. The reversal of 28550858 is 85805582.

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, 3191 + ... + 8202.

It is an arithmetic number, because the mean of its divisors is an integer number (3076380).

Almost surely, 2^28550858 is an apocalyptic number.

28550858 is a deficient number, since it is larger than the sum of its proper divisors (20671222).

28550858 is a wasteful number, since it uses less digits than its factorization.

28550858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11581.

The product of its (nonzero) digits is 128000, while the sum is 41.

The square root of 28550858 is about 5343.3002910187. The cubic root of 28550858 is about 305.6373236054.

The spelling of 28550858 in words is "twenty-eight million, five hundred fifty thousand, eight hundred fifty-eight".