20051230 has 16 divisors (see below), whose sum is σ = 36162144. Its totient is φ = 8004960.

The previous prime is 20051221. The next prime is 20051231. The reversal of 20051230 is 3215002.

It is a self number, because there is not a number n which added to its sum of digits gives 20051230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20051231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4495 + ... + 7765.

It is an arithmetic number, because the mean of its divisors is an integer number (2260134).

Almost surely, 2^20051230 is an apocalyptic number.

20051230 is a deficient number, since it is larger than the sum of its proper divisors (16110914).

20051230 is a wasteful number, since it uses less digits than its factorization.

20051230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3891.

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 20051230 is about 4477.8599799458. The cubic root of 20051230 is about 271.6733300752.

Adding to 20051230 its reverse (3215002), we get a palindrome (23266232).

The spelling of 20051230 in words is "twenty million, fifty-one thousand, two hundred thirty".