19656960 has 72 divisors (see below), whose sum is σ = 62791680. Its totient is φ = 5240832.

The previous prime is 19656937. The next prime is 19656961. The reversal of 19656960 is 6965691.

It is not an unprimeable number, because it can be changed into a prime (19656961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1281 + ... + 6399.

Almost surely, 2^19656960 is an apocalyptic number.

19656960 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 19656960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31395840).

19656960 is an abundant number, since it is smaller than the sum of its proper divisors (43134720).

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

19656960 is an equidigital number, since it uses as much as digits as its factorization.

19656960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5143 (or 5129 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 19656960 is about 4433.6170335292. The cubic root of 19656960 is about 269.8808802386.

The spelling of 19656960 in words is "nineteen million, six hundred fifty-six thousand, nine hundred sixty".