197312226 has 16 divisors (see below), whose sum is σ = 415394400. Its totient is φ = 62309088.

The previous prime is 197312191. The next prime is 197312233. The reversal of 197312226 is 622213791.

It is a super-2 number, since 2×197312226² = 77864229058150152, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 865291 + ... + 865518.

It is an arithmetic number, because the mean of its divisors is an integer number (25962150).

Almost surely, 2^197312226 is an apocalyptic number.

197312226 is an abundant number, since it is smaller than the sum of its proper divisors (218082174).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

197312226 is a wasteful number, since it uses less digits than its factorization.

197312226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1730833.

The product of its digits is 9072, while the sum is 33.

The square root of 197312226 is about 14046.7870347635. The cubic root of 197312226 is about 582.1720243489.

The spelling of 197312226 in words is "one hundred ninety-seven million, three hundred twelve thousand, two hundred twenty-six".