197190400 has 108 divisors (see below), whose sum is σ = 532637784. Its totient is φ = 71680000.

The previous prime is 197190397. The next prime is 197190439. The reversal of 197190400 is 4091791.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69000 + ... + 71800.

Almost surely, 2^197190400 is an apocalyptic number.

197190400 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 197190400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (266318892).

197190400 is an abundant number, since it is smaller than the sum of its proper divisors (335447384).

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

197190400 is a wasteful number, since it uses less digits than its factorization.

197190400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2838 (or 2819 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 31.

The square root of 197190400 is about 14042.4499286983. The cubic root of 197190400 is about 582.0521833364.

The spelling of 197190400 in words is "one hundred ninety-seven million, one hundred ninety thousand, four hundred".