28892180529 has 9 divisors (see below), whose sum is σ = 41733886233. Its totient is φ = 19261113732.

The previous prime is 28892180519. The next prime is 28892180543. The reversal of 28892180529 is 92508129882.

It is a happy number.

The square root of 28892180529 is 169977.

It is a perfect power (a square), and thus also a powerful number.

28892180529 is a `hidden beast` number, since 28 + 8 + 92 + 1 + 8 + 0 + 529 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 28892180529 - 2²³ = 28883791921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28892180509) 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 8 ways as a sum of consecutive naturals, for example, 481602 + ... + 538260.

Almost surely, 2^28892180529 is an apocalyptic number.

28892180529 is the 169977-th square number.

28892180529 is the 84989-th centered octagonal number.

It is an amenable number.

28892180529 is a deficient number, since it is larger than the sum of its proper divisors (12841705704).

28892180529 is an frugal number, since it uses more digits than its factorization.

28892180529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113324 (or 56662 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 28892180529 in words is "twenty-eight billion, eight hundred ninety-two million, one hundred eighty thousand, five hundred twenty-nine".