72735143 has 8 divisors (see below), whose sum is σ = 78414336. Its totient is φ = 67068000.

The previous prime is 72735139. The next prime is 72735149. The reversal of 72735143 is 34153727.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 72735143 - 2² = 72735139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72735149) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12533 + ... + 17393.

It is an arithmetic number, because the mean of its divisors is an integer number (9801792).

Almost surely, 2^72735143 is an apocalyptic number.

72735143 is a deficient number, since it is larger than the sum of its proper divisors (5679193).

72735143 is a wasteful number, since it uses less digits than its factorization.

72735143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6025.

The product of its digits is 17640, while the sum is 32.

The square root of 72735143 is about 8528.4900773818. The cubic root of 72735143 is about 417.4278608910.

The spelling of 72735143 in words is "seventy-two million, seven hundred thirty-five thousand, one hundred forty-three".