196409856 has 80 divisors (see below), whose sum is σ = 530912448. Its totient is φ = 64512000.

The previous prime is 196409849. The next prime is 196409867. The reversal of 196409856 is 658904691.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

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, 108156 + ... + 109956.

Almost surely, 2^196409856 is an apocalyptic number.

196409856 is a gapful number since it is divisible by the number (16) 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 196409856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (265456224).

196409856 is an abundant number, since it is smaller than the sum of its proper divisors (334502592).

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

196409856 is an equidigital number, since it uses as much as digits as its factorization.

196409856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893 (or 1877 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 196409856 is about 14014.6300700375. The cubic root of 196409856 is about 581.2831835836.

The spelling of 196409856 in words is "one hundred ninety-six million, four hundred nine thousand, eight hundred fifty-six".