197239950 has 288 divisors, whose sum is σ = 626745600. Its totient is φ = 44098560.

The previous prime is 197239937. The next prime is 197239951. The reversal of 197239950 is 59932791.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 197239896 and 197239905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (197239951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 3343021 + ... + 3343079.

It is an arithmetic number, because the mean of its divisors is an integer number (2176200).

Almost surely, 2^197239950 is an apocalyptic number.

197239950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 197239950, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (313372800).

197239950 is an abundant number, since it is smaller than the sum of its proper divisors (429505650).

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

197239950 is a wasteful number, since it uses less digits than its factorization.

197239950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 128 counting only the distinct ones).

The product of its (nonzero) digits is 153090, while the sum is 45.

The square root of 197239950 is about 14044.2141111562. The cubic root of 197239950 is about 582.1009319407.

The spelling of 197239950 in words is "one hundred ninety-seven million, two hundred thirty-nine thousand, nine hundred fifty".