193320890 has 16 divisors (see below), whose sum is σ = 397688832. Its totient is φ = 66281424.

The previous prime is 193320887. The next prime is 193320913. The reversal of 193320890 is 98023391.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 193320890.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1380794 + ... + 1380933.

It is an arithmetic number, because the mean of its divisors is an integer number (24855552).

Almost surely, 2^193320890 is an apocalyptic number.

193320890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

193320890 is an abundant number, since it is smaller than the sum of its proper divisors (204367942).

193320890 is a wasteful number, since it uses less digits than its factorization.

193320890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761741.

The product of its (nonzero) digits is 11664, while the sum is 35.

The square root of 193320890 is about 13903.9882767499. The cubic root of 193320890 is about 578.2197593492.

The spelling of 193320890 in words is "one hundred ninety-three million, three hundred twenty thousand, eight hundred ninety".