28318011438 has 8 divisors (see below), whose sum is σ = 56636022888. Its totient is φ = 9439337144.

The previous prime is 28318011373. The next prime is 28318011461. The reversal of 28318011438 is 83411081382.

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

28318011438 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 28318011396 and 28318011405.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2359834281 + ... + 2359834292.

It is an arithmetic number, because the mean of its divisors is an integer number (7079502861).

Almost surely, 2^28318011438 is an apocalyptic number.

28318011438 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.

28318011438 is a wasteful number, since it uses less digits than its factorization.

28318011438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4719668578.

The product of its (nonzero) digits is 36864, while the sum is 39.

The spelling of 28318011438 in words is "twenty-eight billion, three hundred eighteen million, eleven thousand, four hundred thirty-eight".