28057730552 has 16 divisors (see below), whose sum is σ = 52611895440. Its totient is φ = 14027891776.

The previous prime is 28057730527. The next prime is 28057730557. The reversal of 28057730552 is 25503775082.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057730557) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9068 + ... + 237060.

It is an arithmetic number, because the mean of its divisors is an integer number (3288243465).

Almost surely, 2^28057730552 is an apocalyptic number.

It is an amenable number.

28057730552 is a deficient number, since it is larger than the sum of its proper divisors (24554164888).

28057730552 is a wasteful number, since it uses less digits than its factorization.

28057730552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243382 (or 243378 counting only the distinct ones).

The product of its (nonzero) digits is 588000, while the sum is 44.

The spelling of 28057730552 in words is "twenty-eight billion, fifty-seven million, seven hundred thirty thousand, five hundred fifty-two".