28748599552 has 18 divisors (see below), whose sum is σ = 57384900398. Its totient is φ = 14374299648.

The previous prime is 28748599519. The next prime is 28748599559. The reversal of 28748599552 is 25599584782.

It can be written as a sum of positive squares in only one way, i.e., 20717572096 + 8031027456 = 143936^2 + 89616^2 .

It is a Harshad number since it is a multiple of its sum of digits (64).

It is not an unprimeable number, because it can be changed into a prime (28748599559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56149353 + ... + 56149864.

Almost surely, 2^28748599552 is an apocalyptic number.

It is an amenable number.

28748599552 is a deficient number, since it is larger than the sum of its proper divisors (28636300846).

28748599552 is an equidigital number, since it uses as much as digits as its factorization.

28748599552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112299233 (or 112299219 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 64.

The spelling of 28748599552 in words is "twenty-eight billion, seven hundred forty-eight million, five hundred ninety-nine thousand, five hundred fifty-two".