72735193 has 4 divisors (see below), whose sum is σ = 72777168. Its totient is φ = 72693220.

The previous prime is 72735149. The next prime is 72735227. The reversal of 72735193 is 39153727.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 72735193 - 2²¹ = 70638041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72735493) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18271 + ... + 21892.

It is an arithmetic number, because the mean of its divisors is an integer number (18194292).

Almost surely, 2^72735193 is an apocalyptic number.

It is an amenable number.

72735193 is a deficient number, since it is larger than the sum of its proper divisors (41975).

72735193 is a wasteful number, since it uses less digits than its factorization.

72735193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41974.

The product of its digits is 39690, while the sum is 37.

The square root of 72735193 is about 8528.4930087326. The cubic root of 72735193 is about 417.4279565412.

The spelling of 72735193 in words is "seventy-two million, seven hundred thirty-five thousand, one hundred ninety-three".