28612300648 has 8 divisors (see below), whose sum is σ = 53648063730. Its totient is φ = 14306150320.

The previous prime is 28612300643. The next prime is 28612300699. The reversal of 28612300648 is 84600321682.

It can be written as a sum of positive squares in only one way, i.e., 20580197764 + 8032102884 = 143458^2 + 89622^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28612300648.

It is not an unprimeable number, because it can be changed into a prime (28612300643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1788268783 + ... + 1788268798.

Almost surely, 2^28612300648 is an apocalyptic number.

It is an amenable number.

28612300648 is a deficient number, since it is larger than the sum of its proper divisors (25035763082).

28612300648 is a wasteful number, since it uses less digits than its factorization.

28612300648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3576537587 (or 3576537583 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 28612300648 in words is "twenty-eight billion, six hundred twelve million, three hundred thousand, six hundred forty-eight".