20859246 has 12 divisors (see below), whose sum is σ = 45195072. Its totient is φ = 6953076.

The previous prime is 20859233. The next prime is 20859253. The reversal of 20859246 is 64295802.

It is a happy number.

20859246 is a `hidden beast` number, since 20 + 8 + 592 + 46 = 666.

20859246 is nontrivially palindromic in base 14.

It is a self number, because there is not a number n which added to its sum of digits gives 20859246.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 579406 + ... + 579441.

It is an arithmetic number, because the mean of its divisors is an integer number (3766256).

Almost surely, 2^20859246 is an apocalyptic number.

20859246 is an abundant number, since it is smaller than the sum of its proper divisors (24335826).

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

20859246 is a wasteful number, since it uses less digits than its factorization.

20859246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158855 (or 1158852 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 20859246 is about 4567.1923541712. The cubic root of 20859246 is about 275.2746391286.

The spelling of 20859246 in words is "twenty million, eight hundred fifty-nine thousand, two hundred forty-six".