197790240 has 96 divisors (see below), whose sum is σ = 659715840. Its totient is φ = 49639424.

The previous prime is 197790233. The next prime is 197790253. The reversal of 197790240 is 42097791.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3960 + ... + 20279.

It is an arithmetic number, because the mean of its divisors is an integer number (6872040).

Almost surely, 2^197790240 is an apocalyptic number.

197790240 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 197790240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (329857920).

197790240 is an abundant number, since it is smaller than the sum of its proper divisors (461925600).

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

197790240 is a wasteful number, since it uses less digits than its factorization.

197790240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24274 (or 24266 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 197790240 is about 14063.7918073328. The cubic root of 197790240 is about 582.6417738378.

The spelling of 197790240 in words is "one hundred ninety-seven million, seven hundred ninety thousand, two hundred forty".