193473021 has 12 divisors (see below), whose sum is σ = 300080832. Its totient is φ = 110555928.

The previous prime is 193473017. The next prime is 193473041. The reversal of 193473021 is 120374391.

It is not a de Polignac number, because 193473021 - 2² = 193473017 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 193473021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (193473001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 657925 + ... + 658218.

It is an arithmetic number, because the mean of its divisors is an integer number (25006736).

Almost surely, 2^193473021 is an apocalyptic number.

It is an amenable number.

193473021 is a deficient number, since it is larger than the sum of its proper divisors (106607811).

193473021 is a wasteful number, since it uses less digits than its factorization.

193473021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1316160 (or 1316153 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 193473021 is about 13909.4579693099. The cubic root of 193473021 is about 578.3713933949.

The spelling of 193473021 in words is "one hundred ninety-three million, four hundred seventy-three thousand, twenty-one".