20247227 has 32 divisors (see below), whose sum is σ = 27578880. Its totient is φ = 14353920.

The previous prime is 20247211. The next prime is 20247239. The reversal of 20247227 is 72274202.

It is a happy number.

It is not a de Polignac number, because 20247227 - 2⁴ = 20247211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20247196 and 20247205.

It is not an unprimeable number, because it can be changed into a prime (20247257) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 113024 + ... + 113202.

It is an arithmetic number, because the mean of its divisors is an integer number (861840).

Almost surely, 2^20247227 is an apocalyptic number.

20247227 is a deficient number, since it is larger than the sum of its proper divisors (7331653).

20247227 is a wasteful number, since it uses less digits than its factorization.

20247227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323.

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 20247227 is about 4499.6918783401. The cubic root of 20247227 is about 272.5556466892. Note that the first 3 decimals are identical.

The spelling of 20247227 in words is "twenty million, two hundred forty-seven thousand, two hundred twenty-seven".