197400258 has 48 divisors (see below), whose sum is σ = 471249792. Its totient is φ = 59220000.

The previous prime is 197400251. The next prime is 197400317. The reversal of 197400258 is 852004791.

It is not an unprimeable number, because it can be changed into a prime (197400251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15063 + ... + 24933.

It is an arithmetic number, because the mean of its divisors is an integer number (9817704).

Almost surely, 2^197400258 is an apocalyptic number.

197400258 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197400258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235624896).

197400258 is an abundant number, since it is smaller than the sum of its proper divisors (273849534).

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

197400258 is a wasteful number, since it uses less digits than its factorization.

197400258 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9991 (or 9988 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 197400258 is about 14049.9202132966. The cubic root of 197400258 is about 582.2585912903.

The spelling of 197400258 in words is "one hundred ninety-seven million, four hundred thousand, two hundred fifty-eight".