72031843 has 8 divisors (see below), whose sum is σ = 78666336. Its totient is φ = 65553600.

The previous prime is 72031829. The next prime is 72031849. The reversal of 72031843 is 34813027.

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 72031843 - 2⁵ = 72031811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72031849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38098 + ... + 39943.

It is an arithmetic number, because the mean of its divisors is an integer number (9833292).

Almost surely, 2^72031843 is an apocalyptic number.

72031843 is a deficient number, since it is larger than the sum of its proper divisors (6634493).

72031843 is a wasteful number, since it uses less digits than its factorization.

72031843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78125.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 72031843 is about 8487.1575335916. The cubic root of 72031843 is about 416.0780853020.

The spelling of 72031843 in words is "seventy-two million, thirty-one thousand, eight hundred forty-three".