20045698 has 8 divisors (see below), whose sum is σ = 30561660. Its totient is φ = 9858480.

The previous prime is 20045687. The next prime is 20045717. The reversal of 20045698 is 89654002.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 12411529 + 7634169 = 3523^2 + 2763^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82033 + ... + 82276.

Almost surely, 2^20045698 is an apocalyptic number.

20045698 is a deficient number, since it is larger than the sum of its proper divisors (10515962).

20045698 is a wasteful number, since it uses less digits than its factorization.

20045698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164372.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20045698 is about 4477.2422315528. The cubic root of 20045698 is about 271.6483434934.

The spelling of 20045698 in words is "twenty million, forty-five thousand, six hundred ninety-eight".