19717134 has 16 divisors (see below), whose sum is σ = 40351872. Its totient is φ = 6419448.

The previous prime is 19717109. The next prime is 19717157. The reversal of 19717134 is 43171791.

It is a junction number, because it is equal to n+sod(n) for n = 19717095 and 19717104.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37954 + ... + 38469.

It is an arithmetic number, because the mean of its divisors is an integer number (2521992).

Almost surely, 2^19717134 is an apocalyptic number.

19717134 is an abundant number, since it is smaller than the sum of its proper divisors (20634738).

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

19717134 is a wasteful number, since it uses less digits than its factorization.

19717134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76471.

The product of its digits is 5292, while the sum is 33.

The square root of 19717134 is about 4440.3979551387. The cubic root of 19717134 is about 270.1559866823.

The spelling of 19717134 in words is "nineteen million, seven hundred seventeen thousand, one hundred thirty-four".