28301258 has 8 divisors (see below), whose sum is σ = 43253028. Its totient is φ = 13883584.

The previous prime is 28301249. The next prime is 28301281. The reversal of 28301258 is 85210382.

It can be written as a sum of positive squares in 2 ways, for example, as 28058209 + 243049 = 5297^2 + 493^2 .

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

It is a super-2 number, since 2×28301258² = 1601922408765128, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28301258.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133391 + ... + 133602.

Almost surely, 2^28301258 is an apocalyptic number.

28301258 is a deficient number, since it is larger than the sum of its proper divisors (14951770).

28301258 is a wasteful number, since it uses less digits than its factorization.

28301258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267048.

The product of its (nonzero) digits is 3840, while the sum is 29.

The square root of 28301258 is about 5319.8926680902. The cubic root of 28301258 is about 304.7440583307.

The spelling of 28301258 in words is "twenty-eight million, three hundred one thousand, two hundred fifty-eight".