20955893 has 8 divisors (see below), whose sum is σ = 24775680. Its totient is φ = 17342640.

The previous prime is 20955877. The next prime is 20955899. The reversal of 20955893 is 39855902.

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

It is not a de Polignac number, because 20955893 - 2⁴ = 20955877 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20955893.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20955899) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51413 + ... + 51818.

It is an arithmetic number, because the mean of its divisors is an integer number (3096960).

Almost surely, 2^20955893 is an apocalyptic number.

It is an amenable number.

20955893 is a deficient number, since it is larger than the sum of its proper divisors (3819787).

20955893 is a wasteful number, since it uses less digits than its factorization.

20955893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103267.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 20955893 is about 4577.7606971095. The cubic root of 20955893 is about 275.6991269028.

The spelling of 20955893 in words is "twenty million, nine hundred fifty-five thousand, eight hundred ninety-three".