197790340 has 48 divisors (see below), whose sum is σ = 472832640. Its totient is φ = 68794880.

The previous prime is 197790319. The next prime is 197790349. The reversal of 197790340 is 43097791.

It is a junction number, because it is equal to n+sod(n) for n = 197790293 and 197790302.

It is not an unprimeable number, because it can be changed into a prime (197790349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14485 + ... + 24604.

It is an arithmetic number, because the mean of its divisors is an integer number (9850680).

Almost surely, 2^197790340 is an apocalyptic number.

197790340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

197790340 is an abundant number, since it is smaller than the sum of its proper divisors (275042300).

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

197790340 is a wasteful number, since it uses less digits than its factorization.

197790340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39132 (or 39130 counting only the distinct ones).

The product of its (nonzero) digits is 47628, while the sum is 40.

The square root of 197790340 is about 14063.7953625613. The cubic root of 197790340 is about 582.6418720296.

The spelling of 197790340 in words is "one hundred ninety-seven million, seven hundred ninety thousand, three hundred forty".