20215714 has 4 divisors (see below), whose sum is σ = 30323574. Its totient is φ = 10107856.

The previous prime is 20215711. The next prime is 20215721. The reversal of 20215714 is 41751202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20115225 + 100489 = 4485^2 + 317^2 .

It is not an unprimeable number, because it can be changed into a prime (20215711) 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 as a sum of consecutive naturals, namely, 5053927 + ... + 5053930.

Almost surely, 2^20215714 is an apocalyptic number.

20215714 is a deficient number, since it is larger than the sum of its proper divisors (10107860).

20215714 is a wasteful number, since it uses less digits than its factorization.

20215714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10107859.

The product of its (nonzero) digits is 560, while the sum is 22.

The square root of 20215714 is about 4496.1888305542. The cubic root of 20215714 is about 272.4141704271.

Adding to 20215714 its reverse (41751202), we get a palindrome (61966916).

The spelling of 20215714 in words is "twenty million, two hundred fifteen thousand, seven hundred fourteen".