19793172 has 48 divisors (see below), whose sum is σ = 53327232. Its totient is φ = 5596800.

The previous prime is 19793161. The next prime is 19793173. The reversal of 19793172 is 27139791.

It is a self number, because there is not a number n which added to its sum of digits gives 19793172.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19793173) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7318 + ... + 9650.

It is an arithmetic number, because the mean of its divisors is an integer number (1110984).

Almost surely, 2^19793172 is an apocalyptic number.

19793172 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 19793172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26663616).

19793172 is an abundant number, since it is smaller than the sum of its proper divisors (33534060).

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

19793172 is a wasteful number, since it uses less digits than its factorization.

19793172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2448 (or 2446 counting only the distinct ones).

The product of its digits is 23814, while the sum is 39.

The square root of 19793172 is about 4448.9517866572. The cubic root of 19793172 is about 270.5028215864.

It can be divided in two parts, 1979 and 3172, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 19793172 in words is "nineteen million, seven hundred ninety-three thousand, one hundred seventy-two".