19948723 has 8 divisors (see below), whose sum is σ = 21027600. Its totient is φ = 18895968.

The previous prime is 19948703. The next prime is 19948739. The reversal of 19948723 is 32784991.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19948723 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 19948723.

It is not an unprimeable number, because it can be changed into a prime (19948703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4953 + ... + 8026.

It is an arithmetic number, because the mean of its divisors is an integer number (2628450).

Almost surely, 2^19948723 is an apocalyptic number.

19948723 is a deficient number, since it is larger than the sum of its proper divisors (1078877).

19948723 is a wasteful number, since it uses less digits than its factorization.

19948723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13061.

The product of its digits is 108864, while the sum is 43.

The square root of 19948723 is about 4466.3993327959. The cubic root of 19948723 is about 271.2095844703.

The spelling of 19948723 in words is "nineteen million, nine hundred forty-eight thousand, seven hundred twenty-three".