19714905 has 36 divisors (see below), whose sum is σ = 39756132. Its totient is φ = 9011520.

The previous prime is 19714901. The next prime is 19714927. The reversal of 19714905 is 50941791.

It can be written as a sum of positive squares in 2 ways, for example, as 10055241 + 9659664 = 3171^2 + 3108^2 .

It is not a de Polignac number, because 19714905 - 2² = 19714901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19714905.

It is not an unprimeable number, because it can be changed into a prime (19714901) by changing a digit.

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 35 ways as a sum of consecutive naturals, for example, 2266 + ... + 6675.

It is an arithmetic number, because the mean of its divisors is an integer number (1104337).

Almost surely, 2^19714905 is an apocalyptic number.

19714905 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

19714905 is an abundant number, since it is smaller than the sum of its proper divisors (20041227).

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

19714905 is a wasteful number, since it uses less digits than its factorization.

19714905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8966 (or 8956 counting only the distinct ones).

The product of its (nonzero) digits is 11340, while the sum is 36.

The square root of 19714905 is about 4440.1469570274. The cubic root of 19714905 is about 270.1458060210.

The spelling of 19714905 in words is "nineteen million, seven hundred fourteen thousand, nine hundred five".