197761520 has 40 divisors (see below), whose sum is σ = 501597360. Its totient is φ = 71912960.

The previous prime is 197761517. The next prime is 197761523. The reversal of 197761520 is 25167791.

197761520 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (197761517) and next prime (197761523).

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197761523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 111485 + ... + 113244.

It is an arithmetic number, because the mean of its divisors is an integer number (12539934).

Almost surely, 2^197761520 is an apocalyptic number.

197761520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197761520 is an abundant number, since it is smaller than the sum of its proper divisors (303835840).

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

197761520 is a wasteful number, since it uses less digits than its factorization.

197761520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224753 (or 224747 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 38.

The square root of 197761520 is about 14062.7707085055. The cubic root of 197761520 is about 582.6135717692.

The spelling of 197761520 in words is "one hundred ninety-seven million, seven hundred sixty-one thousand, five hundred twenty".