28784109932 has 6 divisors (see below), whose sum is σ = 50372192388. Its totient is φ = 14392054964.

The previous prime is 28784109917. The next prime is 28784109941. The reversal of 28784109932 is 23990148782.

It is a super-2 number, since 2×28784109932² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 3598013738 + ... + 3598013745.

It is an arithmetic number, because the mean of its divisors is an integer number (8395365398).

Almost surely, 2^28784109932 is an apocalyptic number.

It is an amenable number.

28784109932 is a deficient number, since it is larger than the sum of its proper divisors (21588082456).

28784109932 is a wasteful number, since it uses less digits than its factorization.

28784109932 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7196027487 (or 7196027485 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 53.

The spelling of 28784109932 in words is "twenty-eight billion, seven hundred eighty-four million, one hundred nine thousand, nine hundred thirty-two".