28488105652 has 12 divisors (see below), whose sum is σ = 50347791396. Its totient is φ = 14103022400.

The previous prime is 28488105641. The next prime is 28488105689. The reversal of 28488105652 is 25650188482.

It can be written as a sum of positive squares in 2 ways, for example, as 25473436816 + 3014668836 = 159604^2 + 54906^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28488105596 and 28488105605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35257153 + ... + 35257960.

It is an arithmetic number, because the mean of its divisors is an integer number (4195649283).

Almost surely, 2^28488105652 is an apocalyptic number.

It is an amenable number.

28488105652 is a deficient number, since it is larger than the sum of its proper divisors (21859685744).

28488105652 is a wasteful number, since it uses less digits than its factorization.

28488105652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70515218 (or 70515216 counting only the distinct ones).

The product of its (nonzero) digits is 1228800, while the sum is 49.

The spelling of 28488105652 in words is "twenty-eight billion, four hundred eighty-eight million, one hundred five thousand, six hundred fifty-two".