193216680 has 96 divisors (see below), whose sum is σ = 629670600. Its totient is φ = 51383808.

The previous prime is 193216669. The next prime is 193216691. The reversal of 193216680 is 86612391.

It is an interprime number because it is at equal distance from previous prime (193216669) and next prime (193216691).

It can be written as a sum of positive squares in 4 ways, for example, as 129823236 + 63393444 = 11394^2 + 7962^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 254862 + ... + 255618.

Almost surely, 2^193216680 is an apocalyptic number.

193216680 is a gapful number since it is divisible by the number (10) 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 193216680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (314835300).

193216680 is an abundant number, since it is smaller than the sum of its proper divisors (436453920).

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

193216680 is a wasteful number, since it uses less digits than its factorization.

193216680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1483 (or 1476 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 193216680 is about 13900.2402856929. The cubic root of 193216680 is about 578.1158438482.

The spelling of 193216680 in words is "one hundred ninety-three million, two hundred sixteen thousand, six hundred eighty".