20197226 has 16 divisors (see below), whose sum is σ = 34682496. Its totient is φ = 8641296.

The previous prime is 20197211. The next prime is 20197237. The reversal of 20197226 is 62279102.

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 7 ways as a sum of consecutive naturals, for example, 13235 + ... + 14681.

It is an arithmetic number, because the mean of its divisors is an integer number (2167656).

Almost surely, 2^20197226 is an apocalyptic number.

20197226 is a deficient number, since it is larger than the sum of its proper divisors (14485270).

20197226 is a wasteful number, since it uses less digits than its factorization.

20197226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 20197226 is about 4494.1323968036. The cubic root of 20197226 is about 272.3311009020.

The spelling of 20197226 in words is "twenty million, one hundred ninety-seven thousand, two hundred twenty-six".