20053146 has 16 divisors (see below), whose sum is σ = 40504608. Its totient is φ = 6618000.

The previous prime is 20053129. The next prime is 20053147. The reversal of 20053146 is 64135002.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20053147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15940 + ... + 17151.

It is an arithmetic number, because the mean of its divisors is an integer number (2531538).

Almost surely, 2^20053146 is an apocalyptic number.

20053146 is an abundant number, since it is smaller than the sum of its proper divisors (20451462).

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

20053146 is a wasteful number, since it uses less digits than its factorization.

20053146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33197.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 20053146 is about 4478.0739163171. The cubic root of 20053146 is about 271.6819830693.

Adding to 20053146 its reverse (64135002), we get a palindrome (84188148).

It can be divided in two parts, 2005 and 3146, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 20053146 in words is "twenty million, fifty-three thousand, one hundred forty-six".