196197390 has 120 divisors (see below), whose sum is σ = 544229928. Its totient is φ = 50712480.

The previous prime is 196197371. The next prime is 196197403. The reversal of 196197390 is 93791691.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1497625 + ... + 1497755.

Almost surely, 2^196197390 is an apocalyptic number.

196197390 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 196197390, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272114964).

196197390 is an abundant number, since it is smaller than the sum of its proper divisors (348032538).

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

196197390 is a wasteful number, since it uses less digits than its factorization.

196197390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236 (or 184 counting only the distinct ones).

The product of its (nonzero) digits is 91854, while the sum is 45.

The square root of 196197390 is about 14007.0478688409. The cubic root of 196197390 is about 581.0735072887.

The spelling of 196197390 in words is "one hundred ninety-six million, one hundred ninety-seven thousand, three hundred ninety".