19428456996 has 81 divisors (see below), whose sum is σ = 53208949521. Its totient is φ = 5974641504.

The previous prime is 19428456977. The next prime is 19428457001. The reversal of 19428456996 is 69965482491.

The square root of 19428456996 is 139386.

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

19428456996 is a `hidden beast` number, since 1 + 94 + 2 + 8 + 456 + 9 + 96 = 666.

It can be written as a sum of positive squares in only one way, i.e., 2874032100 + 16554424896 = 53610^2 + 128664^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 10871215 + ... + 10873001.

Almost surely, 2^19428456996 is an apocalyptic number.

19428456996 is the 139386-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19428456996

19428456996 is an abundant number, since it is smaller than the sum of its proper divisors (33780492525).

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

19428456996 is a wasteful number, since it uses less digits than its factorization.

19428456996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3610 (or 1805 counting only the distinct ones).

The product of its digits is 33592320, while the sum is 63.

The spelling of 19428456996 in words is "nineteen billion, four hundred twenty-eight million, four hundred fifty-six thousand, nine hundred ninety-six".