20012546 has 8 divisors (see below), whose sum is σ = 30987264. Its totient is φ = 9683460.

The previous prime is 20012543. The next prime is 20012561. The reversal of 20012546 is 64521002.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (20012543) 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, 161330 + ... + 161453.

It is an arithmetic number, because the mean of its divisors is an integer number (3873408).

Almost surely, 2^20012546 is an apocalyptic number.

20012546 is a deficient number, since it is larger than the sum of its proper divisors (10974718).

20012546 is a wasteful number, since it uses less digits than its factorization.

20012546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322816.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 20012546 is about 4473.5384205347. The cubic root of 20012546 is about 271.4985082678.

Adding to 20012546 its reverse (64521002), we get a palindrome (84533548).

The spelling of 20012546 in words is "twenty million, twelve thousand, five hundred forty-six".