20052864 has 144 divisors (see below), whose sum is σ = 63091080. Its totient is φ = 6110208.

The previous prime is 20052821. The next prime is 20052869. The reversal of 20052864 is 46825002.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20052869) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 194637 + ... + 194739.

Almost surely, 2^20052864 is an apocalyptic number.

20052864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20052864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31545540).

20052864 is an abundant number, since it is smaller than the sum of its proper divisors (43038216).

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

20052864 is a wasteful number, since it uses less digits than its factorization.

20052864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 121 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 20052864 is about 4478.0424294551. The cubic root of 20052864 is about 271.6807095421.

Adding to 20052864 its reverse (46825002), we get a palindrome (66877866).

The spelling of 20052864 in words is "twenty million, fifty-two thousand, eight hundred sixty-four".