20052810 has 48 divisors (see below), whose sum is σ = 52697736. Its totient is φ = 5289984.

The previous prime is 20052793. The next prime is 20052811. The reversal of 20052810 is 1825002.

It can be written as a sum of positive squares in 4 ways, for example, as 15374241 + 4678569 = 3921^2 + 2163^2 .

It is a super-2 number, since 2×20052810² = 804230377792200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (20052811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7582 + ... + 9878.

Almost surely, 2^20052810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20052810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26348868).

20052810 is an abundant number, since it is smaller than the sum of its proper divisors (32644926).

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

20052810 is a wasteful number, since it uses less digits than its factorization.

20052810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407 (or 2404 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 20052810 is about 4478.0364000307. The cubic root of 20052810 is about 271.6804656738.

Adding to 20052810 its reverse (1825002), we get a palindrome (21877812).

The spelling of 20052810 in words is "twenty million, fifty-two thousand, eight hundred ten".