197864250 has 32 divisors (see below), whose sum is σ = 493871040. Its totient is φ = 52763600.

The previous prime is 197864231. The next prime is 197864257. The reversal of 197864250 is 52468791.

It is a super-2 number, since 2×197864250² = 78300522856125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (197864257) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131160 + ... + 132659.

It is an arithmetic number, because the mean of its divisors is an integer number (15433470).

Almost surely, 2^197864250 is an apocalyptic number.

197864250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

197864250 is an abundant number, since it is smaller than the sum of its proper divisors (296006790).

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

197864250 is a wasteful number, since it uses less digits than its factorization.

197864250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263839 (or 263829 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 42.

The square root of 197864250 is about 14066.4227861955. The cubic root of 197864250 is about 582.7144365744.

The spelling of 197864250 in words is "one hundred ninety-seven million, eight hundred sixty-four thousand, two hundred fifty".