19990246 has 8 divisors (see below), whose sum is σ = 30007944. Its totient is φ = 9987600.

The previous prime is 19990241. The next prime is 19990253. The reversal of 19990246 is 64209991.

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 = 19990199 and 19990208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19990241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546 + ... + 6346.

It is an arithmetic number, because the mean of its divisors is an integer number (3750993).

Almost surely, 2^19990246 is an apocalyptic number.

19990246 is a deficient number, since it is larger than the sum of its proper divisors (10017698).

19990246 is a wasteful number, since it uses less digits than its factorization.

19990246 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7526.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 19990246 is about 4471.0452916516. The cubic root of 19990246 is about 271.3976271015.

The spelling of 19990246 in words is "nineteen million, nine hundred ninety thousand, two hundred forty-six".