197130050 has 72 divisors (see below), whose sum is σ = 407434860. Its totient is φ = 70886400.

The previous prime is 197130041. The next prime is 197130067. The reversal of 197130050 is 50031791.

It can be written as a sum of positive squares in 18 ways, for example, as 139263601 + 57866449 = 11801^2 + 7607^2 .

It is a super-2 number, since 2×197130050² = 77720513226005000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 346166 + ... + 346734.

Almost surely, 2^197130050 is an apocalyptic number.

197130050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197130050 is an abundant number, since it is smaller than the sum of its proper divisors (210304810).

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

197130050 is a wasteful number, since it uses less digits than its factorization.

197130050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 648 (or 630 counting only the distinct ones).

The product of its (nonzero) digits is 945, while the sum is 26.

The square root of 197130050 is about 14040.3009227011. The cubic root of 197130050 is about 581.9927983741.

The spelling of 197130050 in words is "one hundred ninety-seven million, one hundred thirty thousand, fifty".