19564968 has 32 divisors (see below), whose sum is σ = 50492160. Its totient is φ = 6311040.

The previous prime is 19564967. The next prime is 19565017. The reversal of 19564968 is 86946591.

It is not an unprimeable number, because it can be changed into a prime (19564967) 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, 12405 + ... + 13892.

It is an arithmetic number, because the mean of its divisors is an integer number (1577880).

Almost surely, 2^19564968 is an apocalyptic number.

It is an amenable number.

19564968 is an abundant number, since it is smaller than the sum of its proper divisors (30927192).

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

19564968 is a wasteful number, since it uses less digits than its factorization.

19564968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26337 (or 26333 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The square root of 19564968 is about 4423.2304936551. The cubic root of 19564968 is about 269.4592193817.

The spelling of 19564968 in words is "nineteen million, five hundred sixty-four thousand, nine hundred sixty-eight".