28783972051 has 8 divisors (see below), whose sum is σ = 29237735664. Its totient is φ = 28331815680.

The previous prime is 28783972033. The next prime is 28783972103. The reversal of 28783972051 is 15027938782.

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 28783972051 - 2¹¹ = 28783970003 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28783972051.

It is not an unprimeable number, because it can be changed into a prime (28783972031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 365686 + ... + 437371.

It is an arithmetic number, because the mean of its divisors is an integer number (3654716958).

Almost surely, 2^28783972051 is an apocalyptic number.

28783972051 is a deficient number, since it is larger than the sum of its proper divisors (453763613).

28783972051 is an equidigital number, since it uses as much as digits as its factorization.

28783972051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 803621.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 28783972051 in words is "twenty-eight billion, seven hundred eighty-three million, nine hundred seventy-two thousand, fifty-one".