197047816 has 48 divisors (see below), whose sum is σ = 455082300. Its totient is φ = 79478784.

The previous prime is 197047793. The next prime is 197047817. The reversal of 197047816 is 618740791.

It can be written as a sum of positive squares in 2 ways, for example, as 191711716 + 5336100 = 13846^2 + 2310^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197047817) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8121 + ... + 21448.

Almost surely, 2^197047816 is an apocalyptic number.

It is an amenable number.

197047816 is an abundant number, since it is smaller than the sum of its proper divisors (258034484).

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

197047816 is a wasteful number, since it uses less digits than its factorization.

197047816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29606 (or 29595 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The square root of 197047816 is about 14037.3721187407. The cubic root of 197047816 is about 581.9118598392.

The spelling of 197047816 in words is "one hundred ninety-seven million, forty-seven thousand, eight hundred sixteen".