20665092 has 96 divisors (see below), whose sum is σ = 58051840. Its totient is φ = 5598720.

The previous prime is 20665067. The next prime is 20665093. The reversal of 20665092 is 29056602.

It is not an unprimeable number, because it can be changed into a prime (20665093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 189534 + ... + 189642.

Almost surely, 2^20665092 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20665092, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29025920).

20665092 is an abundant number, since it is smaller than the sum of its proper divisors (37386748).

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

20665092 is a wasteful number, since it uses less digits than its factorization.

20665092 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221 (or 219 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20665092 is about 4545.8873721200. The cubic root of 20665092 is about 274.4179070442.

The spelling of 20665092 in words is "twenty million, six hundred sixty-five thousand, ninety-two".