28888458 has 8 divisors (see below), whose sum is σ = 57776928. Its totient is φ = 9629484.

The previous prime is 28888451. The next prime is 28888459. The reversal of 28888458 is 85488882.

It is a happy number.

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

28888458 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 28888458.

It is not an unprimeable number, because it can be changed into a prime (28888451) 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, 2407366 + ... + 2407377.

It is an arithmetic number, because the mean of its divisors is an integer number (7222116).

Almost surely, 2^28888458 is an apocalyptic number.

28888458 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28888458 is a wasteful number, since it uses less digits than its factorization.

28888458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4814748.

The product of its digits is 1310720, while the sum is 51.

The square root of 28888458 is about 5374.7984148245. The cubic root of 28888458 is about 306.8372772034.

The spelling of 28888458 in words is "twenty-eight million, eight hundred eighty-eight thousand, four hundred fifty-eight".