19730106 has 48 divisors (see below), whose sum is σ = 46938528. Its totient is φ = 5940000.

The previous prime is 19730101. The next prime is 19730107. The reversal of 19730106 is 60103791.

It is a self number, because there is not a number n which added to its sum of digits gives 19730106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19730101) by changing a digit.

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, 49500 + ... + 49896.

It is an arithmetic number, because the mean of its divisors is an integer number (977886).

Almost surely, 2^19730106 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19730106, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23469264).

19730106 is an abundant number, since it is smaller than the sum of its proper divisors (27208422).

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

19730106 is a wasteful number, since it uses less digits than its factorization.

19730106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667 (or 664 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 19730106 is about 4441.8583948613. The cubic root of 19730106 is about 270.2152193477.

Adding to 19730106 its reverse (60103791), we get a palindrome (79833897).

It can be divided in two parts, 197 and 30106, that added together give a palindrome (30303).

The spelling of 19730106 in words is "nineteen million, seven hundred thirty thousand, one hundred six".