19730516 has 12 divisors (see below), whose sum is σ = 37184532. Its totient is φ = 9106368.

The previous prime is 19730497. The next prime is 19730519. The reversal of 19730516 is 61503791.

It can be written as a sum of positive squares in 2 ways, for example, as 894916 + 18835600 = 946^2 + 4340^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19730519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189665 + ... + 189768.

It is an arithmetic number, because the mean of its divisors is an integer number (3098711).

Almost surely, 2^19730516 is an apocalyptic number.

It is an amenable number.

19730516 is a deficient number, since it is larger than the sum of its proper divisors (17454016).

19730516 is a wasteful number, since it uses less digits than its factorization.

19730516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379450 (or 379448 counting only the distinct ones).

The product of its (nonzero) digits is 5670, while the sum is 32.

The square root of 19730516 is about 4441.9045464755. The cubic root of 19730516 is about 270.2170910638.

The spelling of 19730516 in words is "nineteen million, seven hundred thirty thousand, five hundred sixteen".