20455412 has 12 divisors (see below), whose sum is σ = 36951936. Its totient is φ = 9897720.

The previous prime is 20455397. The next prime is 20455417. The reversal of 20455412 is 21455402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 82358 + ... + 82605.

It is an arithmetic number, because the mean of its divisors is an integer number (3079328).

Almost surely, 2^20455412 is an apocalyptic number.

It is an amenable number.

20455412 is a deficient number, since it is larger than the sum of its proper divisors (16496524).

20455412 is a wasteful number, since it uses less digits than its factorization.

20455412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164998 (or 164996 counting only the distinct ones).

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

The square root of 20455412 is about 4522.7659678564. The cubic root of 20455412 is about 273.4866157235.

The spelling of 20455412 in words is "twenty million, four hundred fifty-five thousand, four hundred twelve".