19990282 has 8 divisors (see below), whose sum is σ = 32292036. Its totient is φ = 9226272.

The previous prime is 19990279. The next prime is 19990291. The reversal of 19990282 is 28209991.

It can be written as a sum of positive squares in 2 ways, for example, as 19989841 + 441 = 4471^2 + 21^2 .

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

It is a super-2 number, since 2×19990282² = 799222748879048, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 384403 + ... + 384454.

Almost surely, 2^19990282 is an apocalyptic number.

19990282 is a deficient number, since it is larger than the sum of its proper divisors (12301754).

19990282 is a wasteful number, since it uses less digits than its factorization.

19990282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 768872.

The product of its (nonzero) digits is 23328, while the sum is 40.

The square root of 19990282 is about 4471.0493175540. The cubic root of 19990282 is about 271.3977900195.

The spelling of 19990282 in words is "nineteen million, nine hundred ninety thousand, two hundred eighty-two".