28694753138 has 16 divisors (see below), whose sum is σ = 44437870080. Its totient is φ = 13882281600.

The previous prime is 28694753137. The next prime is 28694753159. The reversal of 28694753138 is 83135749682.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (28694753137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 380123 + ... + 449313.

It is an arithmetic number, because the mean of its divisors is an integer number (2777366880).

Almost surely, 2^28694753138 is an apocalyptic number.

28694753138 is a deficient number, since it is larger than the sum of its proper divisors (15743116942).

28694753138 is a wasteful number, since it uses less digits than its factorization.

28694753138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75913.

The product of its digits is 8709120, while the sum is 56.

The spelling of 28694753138 in words is "twenty-eight billion, six hundred ninety-four million, seven hundred fifty-three thousand, one hundred thirty-eight".