19996064 has 24 divisors (see below), whose sum is σ = 42946848. Its totient is φ = 9088960.

The previous prime is 19996061. The next prime is 19996073. The reversal of 19996064 is 46069991.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (19996061) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28052 + ... + 28755.

It is an arithmetic number, because the mean of its divisors is an integer number (1789452).

Almost surely, 2^19996064 is an apocalyptic number.

It is an amenable number.

19996064 is an abundant number, since it is smaller than the sum of its proper divisors (22950784).

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

19996064 is a wasteful number, since it uses less digits than its factorization.

19996064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56828 (or 56820 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 44.

The square root of 19996064 is about 4471.6958751686. The cubic root of 19996064 is about 271.4239539117.

The spelling of 19996064 in words is "nineteen million, nine hundred ninety-six thousand, sixty-four".