197409240 has 432 divisors, whose sum is σ = 813084480. Its totient is φ = 41368320.

The previous prime is 197409239. The next prime is 197409343. The reversal of 197409240 is 42904791.

197409240 is a `hidden beast` number, since 1 + 9 + 7 + 409 + 240 = 666.

197409240 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 197409195 and 197409204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 107 ways as a sum of consecutive naturals, for example, 6368025 + ... + 6368055.

It is an arithmetic number, because the mean of its divisors is an integer number (1882140).

Almost surely, 2^197409240 is an apocalyptic number.

197409240 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 197409240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (406542240).

197409240 is an abundant number, since it is smaller than the sum of its proper divisors (615675240).

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

197409240 is a wasteful number, since it uses less digits than its factorization.

197409240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 67 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 197409240 is about 14050.2398556039. The cubic root of 197409240 is about 582.2674223617.

The spelling of 197409240 in words is "one hundred ninety-seven million, four hundred nine thousand, two hundred forty".