28784203234766 has 16 divisors (see below), whose sum is σ = 49348015541856. Its totient is φ = 12335170315776.

The previous prime is 28784203234747. The next prime is 28784203234769. The reversal of 28784203234766 is 66743230248782.

It is a super-2 number, since 2×28784203234766² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28784203234699 and 28784203234708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28784203234769) 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, 76203611 + ... + 76580406.

It is an arithmetic number, because the mean of its divisors is an integer number (3084250971366).

Almost surely, 2^{28784203234766} is an apocalyptic number.

28784203234766 is a deficient number, since it is larger than the sum of its proper divisors (20563812307090).

28784203234766 is a wasteful number, since it uses less digits than its factorization.

28784203234766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152797483.

The product of its (nonzero) digits is 130056192, while the sum is 62.

The spelling of 28784203234766 in words is "twenty-eight trillion, seven hundred eighty-four billion, two hundred three million, two hundred thirty-four thousand, seven hundred sixty-six".