19713492 has 72 divisors (see below), whose sum is σ = 51996672. Its totient is φ = 6292800.

The previous prime is 19713487. The next prime is 19713511. The reversal of 19713492 is 29431791.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 103117 + ... + 103307.

It is an arithmetic number, because the mean of its divisors is an integer number (722176).

Almost surely, 2^19713492 is an apocalyptic number.

19713492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19713492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25998336).

19713492 is an abundant number, since it is smaller than the sum of its proper divisors (32283180).

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

19713492 is a wasteful number, since it uses less digits than its factorization.

19713492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 309 (or 304 counting only the distinct ones).

The product of its digits is 13608, while the sum is 36.

The square root of 19713492 is about 4439.9878378212. The cubic root of 19713492 is about 270.1393519339.

It can be divided in two parts, 197 and 13492, that added together give a square (13689 = 117²).

The spelling of 19713492 in words is "nineteen million, seven hundred thirteen thousand, four hundred ninety-two".