19974064 has 20 divisors (see below), whose sum is σ = 42218280. Its totient is φ = 9079040.

The previous prime is 19974049. The next prime is 19974083. The reversal of 19974064 is 46047991.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56569 + ... + 56920.

It is an arithmetic number, because the mean of its divisors is an integer number (2110914).

Almost surely, 2^19974064 is an apocalyptic number.

It is an amenable number.

19974064 is an abundant number, since it is smaller than the sum of its proper divisors (22244216).

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

19974064 is a wasteful number, since it uses less digits than its factorization.

19974064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113508 (or 113502 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 19974064 is about 4469.2352813429. The cubic root of 19974064 is about 271.3243756773.

The spelling of 19974064 in words is "nineteen million, nine hundred seventy-four thousand, sixty-four".