20005412 has 12 divisors (see below), whose sum is σ = 40010880. Its totient is φ = 8573736.

The previous prime is 20005397. The next prime is 20005429. The reversal of 20005412 is 21450002.

20005412 is an admirable number.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 357212 + ... + 357267.

It is an arithmetic number, because the mean of its divisors is an integer number (3334240).

Almost surely, 2^20005412 is an apocalyptic number.

It is an amenable number.

20005412 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.

20005412 is a wasteful number, since it uses less digits than its factorization.

20005412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 714490 (or 714488 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 20005412 is about 4472.7409940662. The cubic root of 20005412 is about 271.4662434983.

Adding to 20005412 its reverse (21450002), we get a palindrome (41455414).

The spelling of 20005412 in words is "twenty million, five thousand, four hundred twelve".