19747968 has 32 divisors (see below), whose sum is σ = 52456560. Its totient is φ = 6582528.

The previous prime is 19747967. The next prime is 19747969. The reversal of 19747968 is 86974791.

It is an interprime number because it is at equal distance from previous prime (19747967) and next prime (19747969).

It is a tau number, because it is divible by the number of its divisors (32).

It is a self number, because there is not a number n which added to its sum of digits gives 19747968.

It is not an unprimeable number, because it can be changed into a prime (19747967) 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, 25330 + ... + 26097.

Almost surely, 2^19747968 is an apocalyptic number.

It is an amenable number.

19747968 is an abundant number, since it is smaller than the sum of its proper divisors (32708592).

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

19747968 is an equidigital number, since it uses as much as digits as its factorization.

19747968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51444 (or 51432 counting only the distinct ones).

The product of its digits is 762048, while the sum is 51.

The square root of 19747968 is about 4443.8685849156. The cubic root of 19747968 is about 270.2967382281.

The spelling of 19747968 in words is "nineteen million, seven hundred forty-seven thousand, nine hundred sixty-eight".