19899682 has 8 divisors (see below), whose sum is σ = 32563152. Its totient is φ = 9045300.

The previous prime is 19899679. The next prime is 19899689. The reversal of 19899682 is 28699891.

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

It is a super-2 number, since 2×19899682² = 791994687402248, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19899689) 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, 452244 + ... + 452287.

It is an arithmetic number, because the mean of its divisors is an integer number (4070394).

Almost surely, 2^19899682 is an apocalyptic number.

19899682 is a deficient number, since it is larger than the sum of its proper divisors (12663470).

19899682 is a wasteful number, since it uses less digits than its factorization.

19899682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904544.

The product of its digits is 559872, while the sum is 52.

The square root of 19899682 is about 4460.9059617974. The cubic root of 19899682 is about 270.9871591525.

The spelling of 19899682 in words is "nineteen million, eight hundred ninety-nine thousand, six hundred eighty-two".