28977632798 has 16 divisors (see below), whose sum is σ = 44153741520. Its totient is φ = 14261017536.

The previous prime is 28977632797. The next prime is 28977632809. The reversal of 28977632798 is 89723677982.

It is a happy number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28977632797) 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, 279815 + ... + 369122.

It is an arithmetic number, because the mean of its divisors is an integer number (2759608845).

Almost surely, 2^28977632798 is an apocalyptic number.

28977632798 is a deficient number, since it is larger than the sum of its proper divisors (15176108722).

28977632798 is a wasteful number, since it uses less digits than its factorization.

28977632798 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649291.

The product of its digits is 128024064, while the sum is 68.

The spelling of 28977632798 in words is "twenty-eight billion, nine hundred seventy-seven million, six hundred thirty-two thousand, seven hundred ninety-eight".