197506920 has 96 divisors (see below), whose sum is σ = 641671200. Its totient is φ = 48612096.

The previous prime is 197506889. The next prime is 197506979. The reversal of 197506920 is 29605791.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15411 + ... + 25149.

It is an arithmetic number, because the mean of its divisors is an integer number (6684075).

Almost surely, 2^197506920 is an apocalyptic number.

197506920 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 197506920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320835600).

197506920 is an abundant number, since it is smaller than the sum of its proper divisors (444164280).

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

197506920 is a wasteful number, since it uses less digits than its factorization.

197506920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9779 (or 9762 counting only the distinct ones).

The product of its (nonzero) digits is 34020, while the sum is 39.

The square root of 197506920 is about 14053.7155229498. The cubic root of 197506920 is about 582.3634437089.

The spelling of 197506920 in words is "one hundred ninety-seven million, five hundred six thousand, nine hundred twenty".