19713672 has 64 divisors (see below), whose sum is σ = 59745600. Its totient is φ = 5973120.

The previous prime is 19713667. The next prime is 19713703. The reversal of 19713672 is 27631791.

It is a happy number.

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

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1773 + ... + 6524.

It is an arithmetic number, because the mean of its divisors is an integer number (933525).

Almost surely, 2^19713672 is an apocalyptic number.

19713672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

19713672 is an abundant number, since it is smaller than the sum of its proper divisors (40031928).

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

19713672 is a wasteful number, since it uses less digits than its factorization.

19713672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8323 (or 8313 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 19713672 is about 4440.0081081007. The cubic root of 19713672 is about 270.1401741277.

The spelling of 19713672 in words is "nineteen million, seven hundred thirteen thousand, six hundred seventy-two".