20455214 has 8 divisors (see below), whose sum is σ = 33043080. Its totient is φ = 9440856.

The previous prime is 20455213. The next prime is 20455219. The reversal of 20455214 is 41255402.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 20455214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455213) 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, 393344 + ... + 393395.

It is an arithmetic number, because the mean of its divisors is an integer number (4130385).

Almost surely, 2^20455214 is an apocalyptic number.

20455214 is a deficient number, since it is larger than the sum of its proper divisors (12587866).

20455214 is a wasteful number, since it uses less digits than its factorization.

20455214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 786754.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 20455214 is about 4522.7440785435. The cubic root of 20455214 is about 273.4857333079.

The spelling of 20455214 in words is "twenty million, four hundred fifty-five thousand, two hundred fourteen".