19980346 has 8 divisors (see below), whose sum is σ = 30095604. Its totient is φ = 9948480.

The previous prime is 19980299. The next prime is 19980347. The reversal of 19980346 is 64308991.

It can be written as a sum of positive squares in 2 ways, for example, as 19704721 + 275625 = 4439^2 + 525^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 19980299 and 19980308.

It is not an unprimeable number, because it can be changed into a prime (19980347) 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, 20245 + ... + 21208.

Almost surely, 2^19980346 is an apocalyptic number.

19980346 is a deficient number, since it is larger than the sum of its proper divisors (10115258).

19980346 is a wasteful number, since it uses less digits than its factorization.

19980346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41696.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 19980346 is about 4469.9380308904. The cubic root of 19980346 is about 271.3528172448.

The spelling of 19980346 in words is "nineteen million, nine hundred eighty thousand, three hundred forty-six".