193978448 has 40 divisors (see below), whose sum is σ = 409274400. Its totient is φ = 88712064.

The previous prime is 193978423. The next prime is 193978451. The reversal of 193978448 is 844879391.

It is a self number, because there is not a number n which added to its sum of digits gives 193978448.

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, 2186 + ... + 19817.

It is an arithmetic number, because the mean of its divisors is an integer number (10231860).

Almost surely, 2^193978448 is an apocalyptic number.

It is an amenable number.

193978448 is an abundant number, since it is smaller than the sum of its proper divisors (215295952).

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

193978448 is a wasteful number, since it uses less digits than its factorization.

193978448 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22059 (or 22053 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 53.

The square root of 193978448 is about 13927.6145839839. The cubic root of 193978448 is about 578.8745993550.

The spelling of 193978448 in words is "one hundred ninety-three million, nine hundred seventy-eight thousand, four hundred forty-eight".