20659116 has 12 divisors (see below), whose sum is σ = 48204632. Its totient is φ = 6886368.

The previous prime is 20659103. The next prime is 20659127. The reversal of 20659116 is 61195602.

It is a tau number, because it is divible by the number of its divisors (12).

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, 860785 + ... + 860808.

Almost surely, 2^20659116 is an apocalyptic number.

It is an amenable number.

20659116 is an abundant number, since it is smaller than the sum of its proper divisors (27545516).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20659116 is a wasteful number, since it uses less digits than its factorization.

20659116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721600 (or 1721598 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 20659116 is about 4545.2300271823. The cubic root of 20659116 is about 274.3914521331.

The spelling of 20659116 in words is "twenty million, six hundred fifty-nine thousand, one hundred sixteen".