197321040 has 480 divisors, whose sum is σ = 835660800. Its totient is φ = 41545728.

The previous prime is 197321039. The next prime is 197321051. The reversal of 197321040 is 40123791.

It is a junction number, because it is equal to n+sod(n) for n = 197320995 and 197321013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4198297 + ... + 4198343.

It is an arithmetic number, because the mean of its divisors is an integer number (1740960).

Almost surely, 2^197321040 is an apocalyptic number.

197321040 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 197321040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (417830400).

197321040 is an abundant number, since it is smaller than the sum of its proper divisors (638339760).

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

197321040 is a wasteful number, since it uses less digits than its factorization.

197321040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 197321040 is about 14047.1007684860. The cubic root of 197321040 is about 582.1806928230.

The spelling of 197321040 in words is "one hundred ninety-seven million, three hundred twenty-one thousand, forty".