20859124 has 24 divisors (see below), whose sum is σ = 42886368. Its totient is φ = 8751840.

The previous prime is 20859121. The next prime is 20859143. The reversal of 20859124 is 42195802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20859121) 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, 17662 + ... + 18805.

It is an arithmetic number, because the mean of its divisors is an integer number (1786932).

Almost surely, 2^20859124 is an apocalyptic number.

It is an amenable number.

20859124 is an abundant number, since it is smaller than the sum of its proper divisors (22027244).

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

20859124 is a wasteful number, since it uses less digits than its factorization.

20859124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36495 (or 36493 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 20859124 is about 4567.1789980249. The cubic root of 20859124 is about 275.2741024590.

The spelling of 20859124 in words is "twenty million, eight hundred fifty-nine thousand, one hundred twenty-four".