28011058 has 4 divisors (see below), whose sum is σ = 42016590. Its totient is φ = 14005528.

The previous prime is 28011031. The next prime is 28011091. The reversal of 28011058 is 85011082.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 17363889 + 10647169 = 4167^2 + 3263^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 7002763 + ... + 7002766.

Almost surely, 2^28011058 is an apocalyptic number.

28011058 is a deficient number, since it is larger than the sum of its proper divisors (14005532).

28011058 is a wasteful number, since it uses less digits than its factorization.

28011058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14005531.

The product of its (nonzero) digits is 640, while the sum is 25.

The square root of 28011058 is about 5292.5474017717. The cubic root of 28011058 is about 303.6988664512.

The spelling of 28011058 in words is "twenty-eight million, eleven thousand, fifty-eight".