19396944 has 90 divisors (see below), whose sum is σ = 63170250. Its totient is φ = 5539968.

The previous prime is 19396943. The next prime is 19396957. The reversal of 19396944 is 44969391.

It can be written as a sum of positive squares in only one way, i.e., 13046544 + 6350400 = 3612^2 + 2520^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 19396944.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19396943) 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 17 ways as a sum of consecutive naturals, for example, 5682 + ... + 8430.

Almost surely, 2^19396944 is an apocalyptic number.

19396944 is a gapful number since it is divisible by the number (14) 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 19396944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31585125).

19396944 is an abundant number, since it is smaller than the sum of its proper divisors (43773306).

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

19396944 is a wasteful number, since it uses less digits than its factorization.

19396944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2777 (or 2761 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 19396944 is about 4404.1961809166. The cubic root of 19396944 is about 268.6856284263.

The spelling of 19396944 in words is "nineteen million, three hundred ninety-six thousand, nine hundred forty-four".