197955520 has 112 divisors (see below), whose sum is σ = 547176960. Its totient is φ = 66806784.

The previous prime is 197955517. The next prime is 197955521. The reversal of 197955520 is 25559791.

It is a happy number.

197955520 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197955521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149421 + ... + 150739.

Almost surely, 2^197955520 is an apocalyptic number.

197955520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 197955520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (273588480).

197955520 is an abundant number, since it is smaller than the sum of its proper divisors (349221440).

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

197955520 is a wasteful number, since it uses less digits than its factorization.

197955520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1410 (or 1400 counting only the distinct ones).

The product of its (nonzero) digits is 141750, while the sum is 43.

The square root of 197955520 is about 14069.6666627181. Note that the first 5 decimals coincide. The cubic root of 197955520 is about 582.8040201671.

The spelling of 197955520 in words is "one hundred ninety-seven million, nine hundred fifty-five thousand, five hundred twenty".