20914518 has 8 divisors (see below), whose sum is σ = 41829048. Its totient is φ = 6971504.

The previous prime is 20914511. The next prime is 20914529. The reversal of 20914518 is 81541902.

It is a happy number.

20914518 is nontrivially palindromic in base 14.

It is a sphenic number, since it is the product of 3 distinct primes.

20914518 is an admirable number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20914511) 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 3 ways as a sum of consecutive naturals, for example, 1742871 + ... + 1742882.

It is an arithmetic number, because the mean of its divisors is an integer number (5228631).

Almost surely, 2^20914518 is an apocalyptic number.

20914518 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20914518 is a wasteful number, since it uses less digits than its factorization.

20914518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3485758.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 20914518 is about 4573.2393333391. The cubic root of 20914518 is about 275.5175619539.

The spelling of 20914518 in words is "twenty million, nine hundred fourteen thousand, five hundred eighteen".