20798098 has 8 divisors (see below), whose sum is σ = 31226508. Its totient is φ = 10389264.

The previous prime is 20798083. The next prime is 20798119. The reversal of 20798098 is 89089702.

It can be written as a sum of positive squares in 2 ways, for example, as 17918289 + 2879809 = 4233^2 + 1697^2 .

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, 1861 + ... + 6712.

Almost surely, 2^20798098 is an apocalyptic number.

20798098 is a deficient number, since it is larger than the sum of its proper divisors (10428410).

20798098 is a wasteful number, since it uses less digits than its factorization.

20798098 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9788.

The product of its (nonzero) digits is 72576, while the sum is 43.

The square root of 20798098 is about 4560.4931750853. The cubic root of 20798098 is about 275.0053905279.

The spelling of 20798098 in words is "twenty million, seven hundred ninety-eight thousand, ninety-eight".