20115732328 has 16 divisors (see below), whose sum is σ = 37742453280. Its totient is φ = 10051078128.

The previous prime is 20115732319. The next prime is 20115732349. The reversal of 20115732328 is 82323751102.

It is a junction number, because it is equal to n+sod(n) for n = 20115732293 and 20115732302.

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, 835900 + ... + 859627.

It is an arithmetic number, because the mean of its divisors is an integer number (2358903330).

Almost surely, 2^20115732328 is an apocalyptic number.

It is an amenable number.

20115732328 is a deficient number, since it is larger than the sum of its proper divisors (17626720952).

20115732328 is a wasteful number, since it uses less digits than its factorization.

20115732328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1697016 (or 1697012 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The spelling of 20115732328 in words is "twenty billion, one hundred fifteen million, seven hundred thirty-two thousand, three hundred twenty-eight".