28488518 has 8 divisors (see below), whose sum is σ = 42771648. Its totient is φ = 14231304.

The previous prime is 28488517. The next prime is 28488539. The reversal of 28488518 is 81588482.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28488511) 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, 3446 + ... + 8297.

It is an arithmetic number, because the mean of its divisors is an integer number (5346456).

Almost surely, 2^28488518 is an apocalyptic number.

28488518 is a deficient number, since it is larger than the sum of its proper divisors (14283130).

28488518 is a wasteful number, since it uses less digits than its factorization.

28488518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12958.

The product of its digits is 163840, while the sum is 44.

The square root of 28488518 is about 5337.4636298527. The cubic root of 28488518 is about 305.4147113212.

The spelling of 28488518 in words is "twenty-eight million, four hundred eighty-eight thousand, five hundred eighteen".