19896992 has 24 divisors (see below), whose sum is σ = 39273696. Its totient is φ = 9922752.

The previous prime is 19896991. The next prime is 19896997. The reversal of 19896992 is 29969891.

It is not an unprimeable number, because it can be changed into a prime (19896991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20093 + ... + 21059.

It is an arithmetic number, because the mean of its divisors is an integer number (1636404).

Almost surely, 2^19896992 is an apocalyptic number.

It is an amenable number.

19896992 is a deficient number, since it is larger than the sum of its proper divisors (19376704).

19896992 is an equidigital number, since it uses as much as digits as its factorization.

19896992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620 (or 1612 counting only the distinct ones).

The product of its digits is 629856, while the sum is 53.

The square root of 19896992 is about 4460.6044433462. The cubic root of 19896992 is about 270.9749480979.

The spelling of 19896992 in words is "nineteen million, eight hundred ninety-six thousand, nine hundred ninety-two".