196878644 has 24 divisors (see below), whose sum is σ = 357063168. Its totient is φ = 94885920.

The previous prime is 196878641. The next prime is 196878653. The reversal of 196878644 is 446878691.

It is a super-2 number, since 2×196878644² = 77522400926557472, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (196878641) 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, 29594 + ... + 35630.

It is an arithmetic number, because the mean of its divisors is an integer number (14877632).

Almost surely, 2^196878644 is an apocalyptic number.

It is an amenable number.

196878644 is a deficient number, since it is larger than the sum of its proper divisors (160184524).

196878644 is a wasteful number, since it uses less digits than its factorization.

196878644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6335 (or 6333 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 53.

The square root of 196878644 is about 14031.3450531302. The cubic root of 196878644 is about 581.7452820328.

The spelling of 196878644 in words is "one hundred ninety-six million, eight hundred seventy-eight thousand, six hundred forty-four".