20727230 has 16 divisors (see below), whose sum is σ = 37782720. Its totient is φ = 8185632.

The previous prime is 20727227. The next prime is 20727253. The reversal of 20727230 is 3272702.

It is a junction number, because it is equal to n+sod(n) for n = 20727196 and 20727205.

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, 12329 + ... + 13908.

It is an arithmetic number, because the mean of its divisors is an integer number (2361420).

Almost surely, 2^20727230 is an apocalyptic number.

20727230 is a deficient number, since it is larger than the sum of its proper divisors (17055490).

20727230 is a wasteful number, since it uses less digits than its factorization.

20727230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26323.

The product of its (nonzero) digits is 1176, while the sum is 23.

The square root of 20727230 is about 4552.7167713356. The cubic root of 20727230 is about 274.6926814862.

Adding to 20727230 its reverse (3272702), we get a palindrome (23999932).

The spelling of 20727230 in words is "twenty million, seven hundred twenty-seven thousand, two hundred thirty".