20098611 has 20 divisors (see below), whose sum is σ = 32335072. Its totient is φ = 12367728.

The previous prime is 20098601. The next prime is 20098613. The reversal of 20098611 is 11689002.

It is not a de Polignac number, because 20098611 - 2¹¹ = 20096563 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20098613) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 8491 + ... + 10596.

Almost surely, 2^20098611 is an apocalyptic number.

20098611 is a deficient number, since it is larger than the sum of its proper divisors (12236461).

20098611 is a wasteful number, since it uses less digits than its factorization.

20098611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19112 (or 19103 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 20098611 is about 4483.1474434821. The cubic root of 20098611 is about 271.8871495165.

The spelling of 20098611 in words is "twenty million, ninety-eight thousand, six hundred eleven".