19713234 has 32 divisors (see below), whose sum is σ = 42045696. Its totient is φ = 6140160.

The previous prime is 19713229. The next prime is 19713263. The reversal of 19713234 is 43231791.

It is a super-2 number, since 2×19713234² = 777223189477512, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15399 + ... + 16629.

It is an arithmetic number, because the mean of its divisors is an integer number (1313928).

Almost surely, 2^19713234 is an apocalyptic number.

19713234 is an abundant number, since it is smaller than the sum of its proper divisors (22332462).

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

19713234 is a wasteful number, since it uses less digits than its factorization.

19713234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410.

The product of its digits is 4536, while the sum is 30.

The square root of 19713234 is about 4439.9587835925. The cubic root of 19713234 is about 270.1381734473.

It can be divided in two parts, 197 and 13234, that added together give a palindrome (13431).

The spelling of 19713234 in words is "nineteen million, seven hundred thirteen thousand, two hundred thirty-four".