19928192 has 16 divisors (see below), whose sum is σ = 39700950. Its totient is φ = 9964032.

The previous prime is 19928177. The next prime is 19928201. The reversal of 19928192 is 29182991.

It can be written as a sum of positive squares in only one way, i.e., 12222016 + 7706176 = 3496^2 + 2776^2 .

It is a tau number, because it is divible by the number of its divisors (16).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77717 + ... + 77972.

Almost surely, 2^19928192 is an apocalyptic number.

It is an amenable number.

19928192 is a deficient number, since it is larger than the sum of its proper divisors (19772758).

19928192 is an equidigital number, since it uses as much as digits as its factorization.

19928192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155703 (or 155691 counting only the distinct ones).

The product of its digits is 23328, while the sum is 41.

The square root of 19928192 is about 4464.1003572948. The cubic root of 19928192 is about 271.1165105875.

The spelling of 19928192 in words is "nineteen million, nine hundred twenty-eight thousand, one hundred ninety-two".