28438854115 has 8 divisors (see below), whose sum is σ = 39001857120. Its totient is φ = 19500928512.

The previous prime is 28438854097. The next prime is 28438854131. The reversal of 28438854115 is 51145883482.

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

It is a cyclic number.

It is not a de Polignac number, because 28438854115 - 2⁵ = 28438854083 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 406269310 + ... + 406269379.

It is an arithmetic number, because the mean of its divisors is an integer number (4875232140).

Almost surely, 2^28438854115 is an apocalyptic number.

28438854115 is a deficient number, since it is larger than the sum of its proper divisors (10563003005).

28438854115 is an equidigital number, since it uses as much as digits as its factorization.

28438854115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 812538701.

The product of its digits is 1228800, while the sum is 49.

The spelling of 28438854115 in words is "twenty-eight billion, four hundred thirty-eight million, eight hundred fifty-four thousand, one hundred fifteen".