28015201528 has 16 divisors (see below), whose sum is σ = 54339831000. Its totient is φ = 13524579936.

The previous prime is 28015201523. The next prime is 28015201531. The reversal of 28015201528 is 82510251082.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28015201493 and 28015201502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28015201523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60377358 + ... + 60377821.

Almost surely, 2^28015201528 is an apocalyptic number.

It is an amenable number.

28015201528 is a deficient number, since it is larger than the sum of its proper divisors (26324629472).

28015201528 is a wasteful number, since it uses less digits than its factorization.

28015201528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120755214 (or 120755210 counting only the distinct ones).

The product of its (nonzero) digits is 12800, while the sum is 34.

The spelling of 28015201528 in words is "twenty-eight billion, fifteen million, two hundred one thousand, five hundred twenty-eight".