193855728 has 80 divisors (see below), whose sum is σ = 561142656. Its totient is φ = 57150720.

The previous prime is 193855699. The next prime is 193855751. The reversal of 193855728 is 827558391.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14575 + ... + 24497.

Almost surely, 2^193855728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 193855728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280571328).

193855728 is an abundant number, since it is smaller than the sum of its proper divisors (367286928).

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

193855728 is a wasteful number, since it uses less digits than its factorization.

193855728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9982 (or 9976 counting only the distinct ones).

The product of its digits is 604800, while the sum is 48.

The square root of 193855728 is about 13923.2082509743. The cubic root of 193855728 is about 578.7524990601.

The spelling of 193855728 in words is "one hundred ninety-three million, eight hundred fifty-five thousand, seven hundred twenty-eight".