20680092 has 36 divisors (see below), whose sum is σ = 55351296. Its totient is φ = 6487680.

The previous prime is 20680091. The next prime is 20680133. The reversal of 20680092 is 29008602.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680091) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16284 + ... + 17507.

It is an arithmetic number, because the mean of its divisors is an integer number (1537536).

Almost surely, 2^20680092 is an apocalyptic number.

It is an amenable number.

20680092 is an abundant number, since it is smaller than the sum of its proper divisors (34671204).

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

20680092 is a wasteful number, since it uses less digits than its factorization.

20680092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33818 (or 33813 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 20680092 is about 4547.5369157380. The cubic root of 20680092 is about 274.4842874739.

Adding to 20680092 its reverse (29008602), we get a palindrome (49688694).

The spelling of 20680092 in words is "twenty million, six hundred eighty thousand, ninety-two".