28972742796 has 48 divisors (see below), whose sum is σ = 79533024480. Its totient is φ = 9089487360.

The previous prime is 28972742767. The next prime is 28972742801. The reversal of 28972742796 is 69724727982.

28972742796 is a `hidden beast` number, since 2 + 8 + 97 + 274 + 279 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7888345 + ... + 7892016.

It is an arithmetic number, because the mean of its divisors is an integer number (1656938010).

Almost surely, 2^28972742796 is an apocalyptic number.

It is an amenable number.

28972742796 is an abundant number, since it is smaller than the sum of its proper divisors (50560281684).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28972742796 is a wasteful number, since it uses less digits than its factorization.

28972742796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15780391 (or 15780383 counting only the distinct ones).

The product of its digits is 42674688, while the sum is 63.

The spelling of 28972742796 in words is "twenty-eight billion, nine hundred seventy-two million, seven hundred forty-two thousand, seven hundred ninety-six".