72671143 has 8 divisors (see below), whose sum is σ = 76862720. Its totient is φ = 68516280.

The previous prime is 72671113. The next prime is 72671149. The reversal of 72671143 is 34117627.

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

It is not a de Polignac number, because 72671143 - 2⁵ = 72671111 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 (72671149) 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, 5055 + ... + 13072.

It is an arithmetic number, because the mean of its divisors is an integer number (9607840).

Almost surely, 2^72671143 is an apocalyptic number.

72671143 is a deficient number, since it is larger than the sum of its proper divisors (4191577).

72671143 is a wasteful number, since it uses less digits than its factorization.

72671143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18357.

The product of its digits is 7056, while the sum is 31.

The square root of 72671143 is about 8524.7371220466. The cubic root of 72671143 is about 417.3053927072.

The spelling of 72671143 in words is "seventy-two million, six hundred seventy-one thousand, one hundred forty-three".