20272215 has 16 divisors (see below), whose sum is σ = 32759136. Its totient is φ = 10704000.

The previous prime is 20272207. The next prime is 20272229. The reversal of 20272215 is 51227202.

It is a happy number.

It is not a de Polignac number, because 20272215 - 2³ = 20272207 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20272191 and 20272200.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 5176 + ... + 8205.

It is an arithmetic number, because the mean of its divisors is an integer number (2047446).

Almost surely, 2^20272215 is an apocalyptic number.

20272215 is a deficient number, since it is larger than the sum of its proper divisors (12486921).

20272215 is a wasteful number, since it uses less digits than its factorization.

20272215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13490.

The product of its (nonzero) digits is 560, while the sum is 21.

The square root of 20272215 is about 4502.4676567411. The cubic root of 20272215 is about 272.6677249285.

Adding to 20272215 its reverse (51227202), we get a palindrome (71499417).

The spelling of 20272215 in words is "twenty million, two hundred seventy-two thousand, two hundred fifteen".