197285780 has 24 divisors (see below), whose sum is σ = 414597960. Its totient is φ = 78857600.

The previous prime is 197285779. The next prime is 197285791. The reversal of 197285780 is 87582791.

197285780 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 10252804 + 187032976 = 3202^2 + 13676^2 .

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, 35426 + ... + 40614.

It is an arithmetic number, because the mean of its divisors is an integer number (17274915).

Almost surely, 2^197285780 is an apocalyptic number.

197285780 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197285780 is an abundant number, since it is smaller than the sum of its proper divisors (217312180).

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

197285780 is a wasteful number, since it uses less digits than its factorization.

197285780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099 (or 7097 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 47.

The square root of 197285780 is about 14045.8456491590. The cubic root of 197285780 is about 582.1460134429.

The spelling of 197285780 in words is "one hundred ninety-seven million, two hundred eighty-five thousand, seven hundred eighty".