19996480 has 112 divisors (see below), whose sum is σ = 55595520. Its totient is φ = 6709248.

The previous prime is 19996469. The next prime is 19996489. The reversal of 19996480 is 8469991.

It is a tau number, because it is divible by the number of its divisors (112).

It is a self number, because there is not a number n which added to its sum of digits gives 19996480.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19996489) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 176904 + ... + 177016.

Almost surely, 2^19996480 is an apocalyptic number.

19996480 is a gapful number since it is divisible by the number (10) 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 19996480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27797760).

19996480 is an abundant number, since it is smaller than the sum of its proper divisors (35599040).

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

19996480 is a wasteful number, since it uses less digits than its factorization.

19996480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216 (or 206 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 46.

The square root of 19996480 is about 4471.7423897179. The cubic root of 19996480 is about 271.4258361418.

The spelling of 19996480 in words is "nineteen million, nine hundred ninety-six thousand, four hundred eighty".