28738318 has 8 divisors (see below), whose sum is σ = 49265712. Its totient is φ = 12316416.

The previous prime is 28738301. The next prime is 28738321. The reversal of 28738318 is 81383782.

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1026355 + ... + 1026382.

It is an arithmetic number, because the mean of its divisors is an integer number (6158214).

Almost surely, 2^28738318 is an apocalyptic number.

28738318 is a deficient number, since it is larger than the sum of its proper divisors (20527394).

28738318 is a wasteful number, since it uses less digits than its factorization.

28738318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2052746.

The product of its digits is 64512, while the sum is 40.

The square root of 28738318 is about 5360.8131845831. The cubic root of 28738318 is about 306.3047855340.

The spelling of 28738318 in words is "twenty-eight million, seven hundred thirty-eight thousand, three hundred eighteen".