20502230 has 32 divisors (see below), whose sum is σ = 42444864. Its totient is φ = 6984576.

The previous prime is 20502203. The next prime is 20502233. The reversal of 20502230 is 3220502.

It is a super-3 number, since 3×20502230³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20502233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11264 + ... + 12956.

It is an arithmetic number, because the mean of its divisors is an integer number (1326402).

Almost surely, 2^20502230 is an apocalyptic number.

20502230 is an abundant number, since it is smaller than the sum of its proper divisors (21942634).

20502230 is a wasteful number, since it uses less digits than its factorization.

20502230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1880.

The product of its (nonzero) digits is 120, while the sum is 14.

The square root of 20502230 is about 4527.9388246751. The cubic root of 20502230 is about 273.6951072494.

Adding to 20502230 its reverse (3220502), we get a palindrome (23722732).

The spelling of 20502230 in words is "twenty million, five hundred two thousand, two hundred thirty".