197357940 has 288 divisors, whose sum is σ = 711809280. Its totient is φ = 43794432.

The previous prime is 197357933. The next prime is 197357957. The reversal of 197357940 is 49753791.

197357940 is a `hidden beast` number, since 1 + 9 + 73 + 579 + 4 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 1022484 + ... + 1022676.

It is an arithmetic number, because the mean of its divisors is an integer number (2471560).

Almost surely, 2^197357940 is an apocalyptic number.

197357940 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 197357940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355904640).

197357940 is an abundant number, since it is smaller than the sum of its proper divisors (514451340).

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

197357940 is a wasteful number, since it uses less digits than its factorization.

197357940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 238140, while the sum is 45.

The square root of 197357940 is about 14048.4141453760. The cubic root of 197357940 is about 582.2169807739.

The spelling of 197357940 in words is "one hundred ninety-seven million, three hundred fifty-seven thousand, nine hundred forty".