28990486 has 8 divisors (see below), whose sum is σ = 49698000. Its totient is φ = 12424488.

The previous prime is 28990477. The next prime is 28990529. The reversal of 28990486 is 68409982.

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

It is a congruent number.

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, 1035361 + ... + 1035388.

It is an arithmetic number, because the mean of its divisors is an integer number (6212250).

Almost surely, 2^28990486 is an apocalyptic number.

28990486 is a deficient number, since it is larger than the sum of its proper divisors (20707514).

28990486 is a wasteful number, since it uses less digits than its factorization.

28990486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2070758.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 28990486 is about 5384.2813819488. The cubic root of 28990486 is about 307.1980811670.

The spelling of 28990486 in words is "twenty-eight million, nine hundred ninety thousand, four hundred eighty-six".