28733387649 has 16 divisors (see below), whose sum is σ = 38708049600. Its totient is φ = 18957571776.

The previous prime is 28733387609. The next prime is 28733387651. The reversal of 28733387649 is 94678333782.

It is not a de Polignac number, because 28733387649 - 2⁷ = 28733387521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 28733387592 and 28733387601.

It is not an unprimeable number, because it can be changed into a prime (28733387609) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 229747 + ... + 332039.

It is an arithmetic number, because the mean of its divisors is an integer number (2419253100).

Almost surely, 2^28733387649 is an apocalyptic number.

It is an amenable number.

28733387649 is a deficient number, since it is larger than the sum of its proper divisors (9974661951).

28733387649 is a wasteful number, since it uses less digits than its factorization.

28733387649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103264.

The product of its digits is 36578304, while the sum is 60.

The spelling of 28733387649 in words is "twenty-eight billion, seven hundred thirty-three million, three hundred eighty-seven thousand, six hundred forty-nine".