28677458 has 8 divisors (see below), whose sum is σ = 44886528. Its totient is φ = 13715284.

The previous prime is 28677457. The next prime is 28677461. The reversal of 28677458 is 85477682.

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

It is not an unprimeable number, because it can be changed into a prime (28677457) by changing a digit.

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, 311666 + ... + 311757.

It is an arithmetic number, because the mean of its divisors is an integer number (5610816).

Almost surely, 2^28677458 is an apocalyptic number.

28677458 is a deficient number, since it is larger than the sum of its proper divisors (16209070).

28677458 is a wasteful number, since it uses less digits than its factorization.

28677458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 623448.

The product of its digits is 752640, while the sum is 47.

The square root of 28677458 is about 5355.1337985152. The cubic root of 28677458 is about 306.0884091021.

The spelling of 28677458 in words is "twenty-eight million, six hundred seventy-seven thousand, four hundred fifty-eight".