19973316 has 48 divisors (see below), whose sum is σ = 51105600. Its totient is φ = 6021120.

The previous prime is 19973309. The next prime is 19973323. The reversal of 19973316 is 61337991.

It is an interprime number because it is at equal distance from previous prime (19973309) and next prime (19973323).

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

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, 44260 + ... + 44708.

It is an arithmetic number, because the mean of its divisors is an integer number (1064700).

Almost surely, 2^19973316 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19973316, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25552800).

19973316 is an abundant number, since it is smaller than the sum of its proper divisors (31132284).

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

19973316 is a wasteful number, since it uses less digits than its factorization.

19973316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 804 (or 802 counting only the distinct ones).

The product of its digits is 30618, while the sum is 39.

The square root of 19973316 is about 4469.1515973393. The cubic root of 19973316 is about 271.3209887323.

The spelling of 19973316 in words is "nineteen million, nine hundred seventy-three thousand, three hundred sixteen".