196091556 has 24 divisors (see below), whose sum is σ = 461153280. Its totient is φ = 64848672.

The previous prime is 196091551. The next prime is 196091557. The reversal of 196091556 is 655190691.

It is a super-2 number, since 2×196091556² = 76903796669002272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (196091551) 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, 62811 + ... + 65858.

It is an arithmetic number, because the mean of its divisors is an integer number (19214720).

Almost surely, 2^196091556 is an apocalyptic number.

It is an amenable number.

196091556 is an abundant number, since it is smaller than the sum of its proper divisors (265061724).

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

196091556 is a wasteful number, since it uses less digits than its factorization.

196091556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128803 (or 128801 counting only the distinct ones).

The product of its (nonzero) digits is 72900, while the sum is 42.

The square root of 196091556 is about 14003.2694753761. The cubic root of 196091556 is about 580.9690064173.

The spelling of 196091556 in words is "one hundred ninety-six million, ninety-one thousand, five hundred fifty-six".