28894658 has 8 divisors (see below), whose sum is σ = 46676028. Its totient is φ = 13335984.

The previous prime is 28894639. The next prime is 28894661. The reversal of 28894658 is 85649882.

It can be written as a sum of positive squares in 2 ways, for example, as 26388769 + 2505889 = 5137^2 + 1583^2 .

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

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 in 3 ways as a sum of consecutive naturals, for example, 555641 + ... + 555692.

Almost surely, 2^28894658 is an apocalyptic number.

28894658 is a deficient number, since it is larger than the sum of its proper divisors (17781370).

28894658 is a wasteful number, since it uses less digits than its factorization.

28894658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1111348.

The product of its digits is 1105920, while the sum is 50.

The square root of 28894658 is about 5375.3751496989. The cubic root of 28894658 is about 306.8592266273.

The spelling of 28894658 in words is "twenty-eight million, eight hundred ninety-four thousand, six hundred fifty-eight".