193089820 has 48 divisors (see below), whose sum is σ = 505548288. Its totient is φ = 60183360.

The previous prime is 193089817. The next prime is 193089847. The reversal of 193089820 is 28980391.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors.

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, 61152 + ... + 64231.

It is an arithmetic number, because the mean of its divisors is an integer number (10532256).

Almost surely, 2^193089820 is an apocalyptic number.

193089820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

193089820 is an abundant number, since it is smaller than the sum of its proper divisors (312458468).

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

193089820 is a wasteful number, since it uses less digits than its factorization.

193089820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125410 (or 125408 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 193089820 is about 13895.6763059593. The cubic root of 193089820 is about 577.9892919158.

The spelling of 193089820 in words is "one hundred ninety-three million, eighty-nine thousand, eight hundred twenty".