20297698 has 8 divisors (see below), whose sum is σ = 30601692. Its totient is φ = 10097136.

The previous prime is 20297671. The next prime is 20297713. The reversal of 20297698 is 89679202.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 13417569 + 6880129 = 3663^2 + 2623^2 .

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

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, 25365 + ... + 26152.

Almost surely, 2^20297698 is an apocalyptic number.

20297698 is a deficient number, since it is larger than the sum of its proper divisors (10303994).

20297698 is a wasteful number, since it uses less digits than its factorization.

20297698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51716.

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 20297698 is about 4505.2966605985. The cubic root of 20297698 is about 272.7819285679.

The spelling of 20297698 in words is "twenty million, two hundred ninety-seven thousand, six hundred ninety-eight".