196399578 has 8 divisors (see below), whose sum is σ = 392799168. Its totient is φ = 65466524.

The previous prime is 196399573. The next prime is 196399583. The reversal of 196399578 is 875993691.

It is an interprime number because it is at equal distance from previous prime (196399573) and next prime (196399583).

It is a sphenic number, since it is the product of 3 distinct primes.

196399578 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (196399573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16366626 + ... + 16366637.

It is an arithmetic number, because the mean of its divisors is an integer number (49099896).

Almost surely, 2^196399578 is an apocalyptic number.

196399578 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

196399578 is a wasteful number, since it uses less digits than its factorization.

196399578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32733268.

The product of its digits is 3674160, while the sum is 57.

The square root of 196399578 is about 14014.2633770027. The cubic root of 196399578 is about 581.2730440164.

The spelling of 196399578 in words is "one hundred ninety-six million, three hundred ninety-nine thousand, five hundred seventy-eight".