28784666953 has 8 divisors (see below), whose sum is σ = 33204209472. Its totient is φ = 24441986256.

The previous prime is 28784666923. The next prime is 28784666971. The reversal of 28784666953 is 35966648782.

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 28784666953 - 2⁵ = 28784666921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28784666923) 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, 19214650 + ... + 19216147.

It is an arithmetic number, because the mean of its divisors is an integer number (4150526184).

Almost surely, 2^28784666953 is an apocalyptic number.

It is an amenable number.

28784666953 is a deficient number, since it is larger than the sum of its proper divisors (4419542519).

28784666953 is a wasteful number, since it uses less digits than its factorization.

28784666953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38430911.

The product of its digits is 104509440, while the sum is 64.

The spelling of 28784666953 in words is "twenty-eight billion, seven hundred eighty-four million, six hundred sixty-six thousand, nine hundred fifty-three".