20015230 has 16 divisors (see below), whose sum is σ = 36079344. Its totient is φ = 7994560.

The previous prime is 20015207. The next prime is 20015231. The reversal of 20015230 is 3251002.

It is a self number, because there is not a number n which added to its sum of digits gives 20015230.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20015231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10770 + ... + 12490.

It is an arithmetic number, because the mean of its divisors is an integer number (2254959).

Almost surely, 2^20015230 is an apocalyptic number.

20015230 is a deficient number, since it is larger than the sum of its proper divisors (16064114).

20015230 is a wasteful number, since it uses less digits than its factorization.

20015230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2891.

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

The square root of 20015230 is about 4473.8383967238. The cubic root of 20015230 is about 271.5106451447.

Adding to 20015230 its reverse (3251002), we get a palindrome (23266232).

The spelling of 20015230 in words is "twenty million, fifteen thousand, two hundred thirty".