197720880 has 480 divisors, whose sum is σ = 806091264. Its totient is φ = 39739392.

The previous prime is 197720879. The next prime is 197720881. The reversal of 197720880 is 88027791.

It is an interprime number because it is at equal distance from previous prime (197720879) and next prime (197720881).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197720881) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4598139 + ... + 4598181.

Almost surely, 2^197720880 is an apocalyptic number.

197720880 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 197720880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403045632).

197720880 is an abundant number, since it is smaller than the sum of its proper divisors (608370384).

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

197720880 is a wasteful number, since it uses less digits than its factorization.

197720880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 42.

The square root of 197720880 is about 14061.3256843016. The cubic root of 197720880 is about 582.5736599979.

The spelling of 197720880 in words is "one hundred ninety-seven million, seven hundred twenty thousand, eight hundred eighty".