72704143 has 8 divisors (see below), whose sum is σ = 73604016. Its totient is φ = 71808000.

The previous prime is 72704117. The next prime is 72704153. The reversal of 72704143 is 34140727.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-72704143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72704153) 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, 64180 + ... + 65302.

It is an arithmetic number, because the mean of its divisors is an integer number (9200502).

Almost surely, 2^72704143 is an apocalyptic number.

72704143 is a deficient number, since it is larger than the sum of its proper divisors (899873).

72704143 is a wasteful number, since it uses less digits than its factorization.

72704143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1865.

The product of its (nonzero) digits is 4704, while the sum is 28.

The square root of 72704143 is about 8526.6724459193. The cubic root of 72704143 is about 417.3685493396.

The spelling of 72704143 in words is "seventy-two million, seven hundred four thousand, one hundred forty-three".