196722816 has 64 divisors (see below), whose sum is σ = 524141280. Its totient is φ = 65374208.

The previous prime is 196722791. The next prime is 196722833. The reversal of 196722816 is 618227691.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178780 + ... + 179876.

Almost surely, 2^196722816 is an apocalyptic number.

196722816 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 196722816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262070640).

196722816 is an abundant number, since it is smaller than the sum of its proper divisors (327418464).

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

196722816 is a wasteful number, since it uses less digits than its factorization.

196722816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1581 (or 1569 counting only the distinct ones).

The product of its digits is 72576, while the sum is 42.

The square root of 196722816 is about 14025.7911006831. The cubic root of 196722816 is about 581.5917591497.

The spelling of 196722816 in words is "one hundred ninety-six million, seven hundred twenty-two thousand, eight hundred sixteen".