20052630 has 128 divisors (see below), whose sum is σ = 59875200. Its totient is φ = 4741632.

The previous prime is 20052623. The next prime is 20052653. The reversal of 20052630 is 3625002.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 101692 + ... + 101888.

It is an arithmetic number, because the mean of its divisors is an integer number (467775).

Almost surely, 2^20052630 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20052630, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29937600).

20052630 is an abundant number, since it is smaller than the sum of its proper divisors (39822570).

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

20052630 is a wasteful number, since it uses less digits than its factorization.

20052630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255 (or 249 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 20052630 is about 4478.0163018908. The cubic root of 20052630 is about 271.6796527765.

Adding to 20052630 its reverse (3625002), we get a palindrome (23677632).

The spelling of 20052630 in words is "twenty million, fifty-two thousand, six hundred thirty".