20119728 has 20 divisors (see below), whose sum is σ = 51976088. Its totient is φ = 6706560.

The previous prime is 20119717. The next prime is 20119747. The reversal of 20119728 is 82791102.

It is a junction number, because it is equal to n+sod(n) for n = 20119695 and 20119704.

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, 209533 + ... + 209628.

Almost surely, 2^20119728 is an apocalyptic number.

It is an amenable number.

20119728 is an abundant number, since it is smaller than the sum of its proper divisors (31856360).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20119728 is a wasteful number, since it uses less digits than its factorization.

20119728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 419172 (or 419166 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 20119728 is about 4485.5019785973. The cubic root of 20119728 is about 271.9823373767.

The spelling of 20119728 in words is "twenty million, one hundred nineteen thousand, seven hundred twenty-eight".