197427228 has 24 divisors (see below), whose sum is σ = 462310800. Its totient is φ = 65573760.

The previous prime is 197427211. The next prime is 197427253. The reversal of 197427228 is 822724791.

It is a self number, because there is not a number n which added to its sum of digits gives 197427228.

It is a congruent number.

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, 25903 + ... + 32646.

It is an arithmetic number, because the mean of its divisors is an integer number (19262950).

Almost surely, 2^197427228 is an apocalyptic number.

It is an amenable number.

197427228 is an abundant number, since it is smaller than the sum of its proper divisors (264883572).

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

197427228 is a wasteful number, since it uses less digits than its factorization.

197427228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58837 (or 58835 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 197427228 is about 14050.8799724430. The cubic root of 197427228 is about 582.2851072960.

It can be divided in two parts, 19 and 7427228, that added together give a palindrome (7427247).

The spelling of 197427228 in words is "one hundred ninety-seven million, four hundred twenty-seven thousand, two hundred twenty-eight".