28078734158 has 8 divisors (see below), whose sum is σ = 43476749760. Its totient is φ = 13586484240.

The previous prime is 28078734157. The next prime is 28078734197. The reversal of 28078734158 is 85143787082.

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 (28078734157) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226441343 + ... + 226441466.

It is an arithmetic number, because the mean of its divisors is an integer number (5434593720).

Almost surely, 2^28078734158 is an apocalyptic number.

28078734158 is a deficient number, since it is larger than the sum of its proper divisors (15398015602).

28078734158 is a wasteful number, since it uses less digits than its factorization.

28078734158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452882842.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 28078734158 in words is "twenty-eight billion, seventy-eight million, seven hundred thirty-four thousand, one hundred fifty-eight".