197090880 has 224 divisors, whose sum is σ = 723717120. Its totient is φ = 44513280.

The previous prime is 197090867. The next prime is 197090891. The reversal of 197090880 is 88090791.

It is a tau number, because it is divible by the number of its divisors (224).

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

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 933975 + ... + 934185.

It is an arithmetic number, because the mean of its divisors is an integer number (3230880).

Almost surely, 2^197090880 is an apocalyptic number.

197090880 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 197090880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (361858560).

197090880 is an abundant number, since it is smaller than the sum of its proper divisors (526626240).

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

197090880 is a wasteful number, since it uses less digits than its factorization.

197090880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377 (or 367 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 42.

The square root of 197090880 is about 14038.9059402790. The cubic root of 197090880 is about 581.9542482427.

The spelling of 197090880 in words is "one hundred ninety-seven million, ninety thousand, eight hundred eighty".