20841458 has 16 divisors (see below), whose sum is σ = 34175520. Its totient is φ = 9453600.

The previous prime is 20841421. The next prime is 20841463. The reversal of 20841458 is 85414802.

It is a happy number.

It is a Curzon number.

It is an unprimeable number.

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, 17213 + ... + 18383.

It is an arithmetic number, because the mean of its divisors is an integer number (2135970).

Almost surely, 2^20841458 is an apocalyptic number.

20841458 is a deficient number, since it is larger than the sum of its proper divisors (13334062).

20841458 is a wasteful number, since it uses less digits than its factorization.

20841458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993.

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 20841458 is about 4565.2445717617. The cubic root of 20841458 is about 275.1963688367.

The spelling of 20841458 in words is "twenty million, eight hundred forty-one thousand, four hundred fifty-eight".