19974006 has 64 divisors (see below), whose sum is σ = 49156800. Its totient is φ = 5971968.

The previous prime is 19974001. The next prime is 19974049. The reversal of 19974006 is 60047991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19974001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 25590 + ... + 26358.

It is an arithmetic number, because the mean of its divisors is an integer number (768075).

Almost surely, 2^19974006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19974006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24578400).

19974006 is an abundant number, since it is smaller than the sum of its proper divisors (29182794).

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

19974006 is a wasteful number, since it uses less digits than its factorization.

19974006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 19974006 is about 4469.2287925323. The cubic root of 19974006 is about 271.3241130563.

The spelling of 19974006 in words is "nineteen million, nine hundred seventy-four thousand, six".