20412546 has 128 divisors (see below), whose sum is σ = 56733696. Its totient is φ = 4730880.

The previous prime is 20412541. The next prime is 20412559. The reversal of 20412546 is 64521402.

20412546 is a modest number, since divided by 12546 gives 204 as remainder.

It is not an unprimeable number, because it can be changed into a prime (20412541) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 180586 + ... + 180698.

It is an arithmetic number, because the mean of its divisors is an integer number (443232).

Almost surely, 2^20412546 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20412546, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28366848).

20412546 is an abundant number, since it is smaller than the sum of its proper divisors (36321150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20412546 is a wasteful number, since it uses less digits than its factorization.

20412546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 20412546 is about 4518.0245683263. The cubic root of 20412546 is about 273.2954442160.

Adding to 20412546 its reverse (64521402), we get a palindrome (84933948).

The spelling of 20412546 in words is "twenty million, four hundred twelve thousand, five hundred forty-six".