19974 has 8 divisors (see below), whose sum is σ = 39960. Its totient is φ = 6656.

The previous prime is 19973. The next prime is 19979. The reversal of 19974 is 47991.

It is a sphenic number, since it is the product of 3 distinct primes.

19974 is an admirable number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 19974.

It is not an unprimeable number, because it can be changed into a prime (19973) 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, 1659 + ... + 1670.

It is an arithmetic number, because the mean of its divisors is an integer number (4995).

2¹⁹⁹⁷⁴ is an apocalyptic number.

19974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19980).

19974 is a wasteful number, since it uses less digits than its factorization.

19974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334.

The product of its digits is 2268, while the sum is 30.

The square root of 19974 is about 141.3294024611. The cubic root of 19974 is about 27.1324085889.

The spelling of 19974 in words is "nineteen thousand, nine hundred seventy-four".