28119818 has 8 divisors (see below), whose sum is σ = 43077312. Its totient is φ = 13760716.

The previous prime is 28119811. The next prime is 28119827. The reversal of 28119818 is 81891182.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (28119811) by changing a digit.

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, 149480 + ... + 149667.

It is an arithmetic number, because the mean of its divisors is an integer number (5384664).

Almost surely, 2^28119818 is an apocalyptic number.

28119818 is a deficient number, since it is larger than the sum of its proper divisors (14957494).

28119818 is a wasteful number, since it uses less digits than its factorization.

28119818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299196.

The product of its digits is 9216, while the sum is 38.

The square root of 28119818 is about 5302.8122727474. The cubic root of 28119818 is about 304.0914213155.

The spelling of 28119818 in words is "twenty-eight million, one hundred nineteen thousand, eight hundred eighteen".