197820880 has 40 divisors (see below), whose sum is σ = 461470464. Its totient is φ = 78864000.

The previous prime is 197820853. The next prime is 197820901. The reversal of 197820880 is 88028791.

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

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, 20905 + ... + 28855.

Almost surely, 2^197820880 is an apocalyptic number.

197820880 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197820880 is an abundant number, since it is smaller than the sum of its proper divisors (263649584).

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

197820880 is a wasteful number, since it uses less digits than its factorization.

197820880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8275 (or 8269 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 43.

The square root of 197820880 is about 14064.8810873039. The cubic root of 197820880 is about 582.6718582716.

The spelling of 197820880 in words is "one hundred ninety-seven million, eight hundred twenty thousand, eight hundred eighty".