19976064 has 32 divisors (see below), whose sum is σ = 53062440. Its totient is φ = 6658560.

The previous prime is 19976057. The next prime is 19976069. The reversal of 19976064 is 46067991.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19976069) 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, 25627 + ... + 26394.

Almost surely, 2^19976064 is an apocalyptic number.

It is an amenable number.

19976064 is an abundant number, since it is smaller than the sum of its proper divisors (33086376).

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

19976064 is an equidigital number, since it uses as much as digits as its factorization.

19976064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52038 (or 52026 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 42.

The square root of 19976064 is about 4469.4590276677. The cubic root of 19976064 is about 271.3334312646. Note that the first 3 decimals are identical.

The spelling of 19976064 in words is "nineteen million, nine hundred seventy-six thousand, sixty-four".