20679258 has 16 divisors (see below), whose sum is σ = 43535520. Its totient is φ = 6530256.

The previous prime is 20679257. The next prime is 20679289. The reversal of 20679258 is 85297602.

It is a happy number.

20679258 is nontrivially palindromic in base 12.

It is a super-2 number, since 2×20679258² = 855263422861128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20679251) 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 7 ways as a sum of consecutive naturals, for example, 90585 + ... + 90812.

It is an arithmetic number, because the mean of its divisors is an integer number (2720970).

Almost surely, 2^20679258 is an apocalyptic number.

20679258 is an abundant number, since it is smaller than the sum of its proper divisors (22856262).

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

20679258 is a wasteful number, since it uses less digits than its factorization.

20679258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181421.

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 20679258 is about 4547.4452168223. The cubic root of 20679258 is about 274.4805975649.

It can be divided in two parts, 2067 and 9258, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 20679258 in words is "twenty million, six hundred seventy-nine thousand, two hundred fifty-eight".