20352630 has 16 divisors (see below), whose sum is σ = 48846384. Its totient is φ = 5427360.

The previous prime is 20352617. The next prime is 20352643. The reversal of 20352630 is 3625302.

It is an interprime number because it is at equal distance from previous prime (20352617) and next prime (20352643).

It is a junction number, because it is equal to n+sod(n) for n = 20352597 and 20352606.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 339181 + ... + 339240.

It is an arithmetic number, because the mean of its divisors is an integer number (3052899).

Almost surely, 2^20352630 is an apocalyptic number.

20352630 is an abundant number, since it is smaller than the sum of its proper divisors (28493754).

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

20352630 is a wasteful number, since it uses less digits than its factorization.

20352630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 678431.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 20352630 is about 4511.3889213855. The cubic root of 20352630 is about 273.0277850130.

Adding to 20352630 its reverse (3625302), we get a palindrome (23977932).

The spelling of 20352630 in words is "twenty million, three hundred fifty-two thousand, six hundred thirty".