196621340 has 24 divisors (see below), whose sum is σ = 414439872. Its totient is φ = 78356160.

The previous prime is 196621333. The next prime is 196621343. The reversal of 196621340 is 43126691.

It is a junction number, because it is equal to n+sod(n) for n = 196621297 and 196621306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196621343) 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 7 ways as a sum of consecutive naturals, for example, 12719 + ... + 23558.

It is an arithmetic number, because the mean of its divisors is an integer number (17268328).

Almost surely, 2^196621340 is an apocalyptic number.

196621340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

196621340 is an abundant number, since it is smaller than the sum of its proper divisors (217818532).

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

196621340 is a wasteful number, since it uses less digits than its factorization.

196621340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36557 (or 36555 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 196621340 is about 14022.1731553993. The cubic root of 196621340 is about 581.4917406614.

The spelling of 196621340 in words is "one hundred ninety-six million, six hundred twenty-one thousand, three hundred forty".