20680134 has 32 divisors (see below), whose sum is σ = 42282240. Its totient is φ = 6741792.

The previous prime is 20680133. The next prime is 20680139. The reversal of 20680134 is 43108602.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20680133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67209 + ... + 67515.

It is an arithmetic number, because the mean of its divisors is an integer number (1321320).

Almost surely, 2^20680134 is an apocalyptic number.

20680134 is an abundant number, since it is smaller than the sum of its proper divisors (21602106).

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

20680134 is a wasteful number, since it uses less digits than its factorization.

20680134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 20680134 is about 4547.5415336201. The cubic root of 20680134 is about 274.4844732941.

Adding to 20680134 its reverse (43108602), we get a palindrome (63788736).

The spelling of 20680134 in words is "twenty million, six hundred eighty thousand, one hundred thirty-four".