28349518 has 8 divisors (see below), whose sum is σ = 42584040. Its totient is φ = 14154840.

The previous prime is 28349479. The next prime is 28349549. The reversal of 28349518 is 81594382.

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 (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8113 + ... + 11068.

It is an arithmetic number, because the mean of its divisors is an integer number (5323005).

Almost surely, 2^28349518 is an apocalyptic number.

28349518 is a deficient number, since it is larger than the sum of its proper divisors (14234522).

28349518 is a wasteful number, since it uses less digits than its factorization.

28349518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19922.

The product of its digits is 69120, while the sum is 40.

The square root of 28349518 is about 5324.4265418916. The cubic root of 28349518 is about 304.9171789816.

The spelling of 28349518 in words is "twenty-eight million, three hundred forty-nine thousand, five hundred eighteen".