19698036 has 48 divisors (see below), whose sum is σ = 48996864. Its totient is φ = 6137856.

The previous prime is 19698031. The next prime is 19698083. The reversal of 19698036 is 63089691.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19698031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45276 + ... + 45708.

It is an arithmetic number, because the mean of its divisors is an integer number (1020768).

Almost surely, 2^19698036 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 19698036, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24498432).

19698036 is an abundant number, since it is smaller than the sum of its proper divisors (29298828).

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

19698036 is a wasteful number, since it uses less digits than its factorization.

19698036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 680 (or 678 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 19698036 is about 4438.2469512185. The cubic root of 19698036 is about 270.0687342154.

The spelling of 19698036 in words is "nineteen million, six hundred ninety-eight thousand, thirty-six".