19982401 has 8 divisors (see below), whose sum is σ = 20512800. Its totient is φ = 19455072.

The previous prime is 19982399. The next prime is 19982407. The reversal of 19982401 is 10428991.

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

It is a cyclic number.

It is not a de Polignac number, because 19982401 - 2¹ = 19982399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (19982407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18525 + ... + 19573.

It is an arithmetic number, because the mean of its divisors is an integer number (2564100).

Almost surely, 2^19982401 is an apocalyptic number.

It is an amenable number.

19982401 is a deficient number, since it is larger than the sum of its proper divisors (530399).

19982401 is a wasteful number, since it uses less digits than its factorization.

19982401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1535.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 19982401 is about 4470.1678939387. The cubic root of 19982401 is about 271.3621199019.

The spelling of 19982401 in words is "nineteen million, nine hundred eighty-two thousand, four hundred one".