72256943 has 8 divisors (see below), whose sum is σ = 82974720. Its totient is φ = 62230680.

The previous prime is 72256937. The next prime is 72256963. The reversal of 72256943 is 34965227.

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 72256943 - 2⁴ = 72256927 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 72256897 and 72256906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72256903) 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, 172655 + ... + 173072.

It is an arithmetic number, because the mean of its divisors is an integer number (10371840).

Almost surely, 2^72256943 is an apocalyptic number.

72256943 is a deficient number, since it is larger than the sum of its proper divisors (10717777).

72256943 is a wasteful number, since it uses less digits than its factorization.

72256943 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345757.

The product of its digits is 90720, while the sum is 38.

The square root of 72256943 is about 8500.4084019534. The cubic root of 72256943 is about 416.5110502255.

The spelling of 72256943 in words is "seventy-two million, two hundred fifty-six thousand, nine hundred forty-three".