193208328 has 88 divisors (see below), whose sum is σ = 544723950. Its totient is φ = 64245312.

The previous prime is 193208311. The next prime is 193208329. The reversal of 193208328 is 823802391.

It is a happy number.

193208328 is a `hidden beast` number, since 1 + 9 + 320 + 8 + 328 = 666.

It can be written as a sum of positive squares in only one way, i.e., 124947684 + 68260644 = 11178^2 + 8262^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 193208292 and 193208301.

It is not an unprimeable number, because it can be changed into a prime (193208329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 21 ways as a sum of consecutive naturals, for example, 472188 + ... + 472596.

Almost surely, 2^193208328 is an apocalyptic number.

193208328 is a gapful number since it is divisible by the number (18) 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 193208328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (272361975).

193208328 is an abundant number, since it is smaller than the sum of its proper divisors (351515622).

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

193208328 is an frugal number, since it uses more digits than its factorization.

193208328 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 193208328 is about 13899.9398559850. The cubic root of 193208328 is about 578.1075138339.

The spelling of 193208328 in words is "one hundred ninety-three million, two hundred eight thousand, three hundred twenty-eight".