28784946553 has 16 divisors (see below), whose sum is σ = 34120765440. Its totient is φ = 23991152400.

The previous prime is 28784946551. The next prime is 28784946559. The reversal of 28784946553 is 35564948782.

It is a cyclic number.

It is not a de Polignac number, because 28784946553 - 2¹ = 28784946551 is a prime.

It is a super-3 number, since 3×28784946553³ (a number of 32 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28784946491 and 28784946500.

It is not an unprimeable number, because it can be changed into a prime (28784946551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2214925 + ... + 2227882.

It is an arithmetic number, because the mean of its divisors is an integer number (2132547840).

Almost surely, 2^28784946553 is an apocalyptic number.

It is an amenable number.

28784946553 is a deficient number, since it is larger than the sum of its proper divisors (5335818887).

28784946553 is a wasteful number, since it uses less digits than its factorization.

28784946553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442868.

The product of its digits is 58060800, while the sum is 61.

The spelling of 28784946553 in words is "twenty-eight billion, seven hundred eighty-four million, nine hundred forty-six thousand, five hundred fifty-three".