19693044 has 120 divisors (see below), whose sum is σ = 62068160. Its totient is φ = 5318784.

The previous prime is 19693039. The next prime is 19693067. The reversal of 19693044 is 44039691.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 42864 + ... + 43320.

Almost surely, 2^19693044 is an apocalyptic number.

19693044 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 19693044, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31034080).

19693044 is an abundant number, since it is smaller than the sum of its proper divisors (42375116).

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

19693044 is a wasteful number, since it uses less digits than its factorization.

19693044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 499 (or 488 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 19693044 is about 4437.6845313744. The cubic root of 19693044 is about 270.0459181163.

The spelling of 19693044 in words is "nineteen million, six hundred ninety-three thousand, forty-four".