20328200929 has 9 divisors (see below), whose sum is σ = 21253891953. Its totient is φ = 19441229412.

The previous prime is 20328200881. The next prime is 20328200951. The reversal of 20328200929 is 92900282302.

The square root of 20328200929 is 142577.

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

It is not a de Polignac number, because 20328200929 - 2²³ = 20319812321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20328200999) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 3276172 + ... + 3282370.

Almost surely, 2^20328200929 is an apocalyptic number.

20328200929 is the 142577-th square number.

20328200929 is the 71289-th centered octagonal number.

It is an amenable number.

20328200929 is a deficient number, since it is larger than the sum of its proper divisors (925691024).

20328200929 is an frugal number, since it uses more digits than its factorization.

20328200929 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12444 (or 6222 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 37.

The spelling of 20328200929 in words is "twenty billion, three hundred twenty-eight million, two hundred thousand, nine hundred twenty-nine".