28357837838 has 8 divisors (see below), whose sum is σ = 46403734680. Its totient is φ = 12889926280.

The previous prime is 28357837831. The next prime is 28357837913. The reversal of 28357837838 is 83873875382.

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 (28357837831) 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, 644496293 + ... + 644496336.

It is an arithmetic number, because the mean of its divisors is an integer number (5800466835).

Almost surely, 2^28357837838 is an apocalyptic number.

28357837838 is a deficient number, since it is larger than the sum of its proper divisors (18045896842).

28357837838 is a wasteful number, since it uses less digits than its factorization.

28357837838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1288992642.

The product of its digits is 54190080, while the sum is 62.

The spelling of 28357837838 in words is "twenty-eight billion, three hundred fifty-seven million, eight hundred thirty-seven thousand, eight hundred thirty-eight".