197784234 has 64 divisors (see below), whose sum is σ = 463449600. Its totient is φ = 62427456.

The previous prime is 197784221. The next prime is 197784241. The reversal of 197784234 is 432487791.

It is a self number, because there is not a number n which added to its sum of digits gives 197784234.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 81807 + ... + 84189.

It is an arithmetic number, because the mean of its divisors is an integer number (7241400).

Almost surely, 2^197784234 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197784234, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231724800).

197784234 is an abundant number, since it is smaller than the sum of its proper divisors (265665366).

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

197784234 is a wasteful number, since it uses less digits than its factorization.

197784234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2476 (or 2470 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 197784234 is about 14063.5782786601. The cubic root of 197784234 is about 582.6358763747.

The spelling of 197784234 in words is "one hundred ninety-seven million, seven hundred eighty-four thousand, two hundred thirty-four".