20815114 has 16 divisors (see below), whose sum is σ = 32076000. Its totient is φ = 10126480.

The previous prime is 20815099. The next prime is 20815117. The reversal of 20815114 is 41151802.

It is not an unprimeable number, because it can be changed into a prime (20815117) 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, 13137 + ... + 14635.

It is an arithmetic number, because the mean of its divisors is an integer number (2004750).

Almost surely, 2^20815114 is an apocalyptic number.

20815114 is a deficient number, since it is larger than the sum of its proper divisors (11260886).

20815114 is a wasteful number, since it uses less digits than its factorization.

20815114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1685.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 20815114 is about 4562.3583813637. The cubic root of 20815114 is about 275.0803687964.

Adding to 20815114 its reverse (41151802), we get a palindrome (61966916).

The spelling of 20815114 in words is "twenty million, eight hundred fifteen thousand, one hundred fourteen".