19973064 has 16 divisors (see below), whose sum is σ = 49932720. Its totient is φ = 6657680.

The previous prime is 19973059. The next prime is 19973071. The reversal of 19973064 is 46037991.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 416082 + ... + 416129.

It is an arithmetic number, because the mean of its divisors is an integer number (3120795).

Almost surely, 2^19973064 is an apocalyptic number.

It is an amenable number.

19973064 is an abundant number, since it is smaller than the sum of its proper divisors (29959656).

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

19973064 is a wasteful number, since it uses less digits than its factorization.

19973064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832220 (or 832216 counting only the distinct ones).

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 19973064 is about 4469.1234039798. The cubic root of 19973064 is about 271.3198476570.

The spelling of 19973064 in words is "nineteen million, nine hundred seventy-three thousand, sixty-four".