72229443 has 32 divisors (see below), whose sum is σ = 114331392. Its totient is φ = 39984000.

The previous prime is 72229427. The next prime is 72229457. The reversal of 72229443 is 34492227.

It is not a de Polignac number, because 72229443 - 2⁴ = 72229427 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (72229483) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42496 + ... + 44162.

It is an arithmetic number, because the mean of its divisors is an integer number (3572856).

Almost surely, 2^72229443 is an apocalyptic number.

72229443 is a deficient number, since it is larger than the sum of its proper divisors (42101949).

72229443 is a wasteful number, since it uses less digits than its factorization.

72229443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795.

The product of its digits is 24192, while the sum is 33.

The square root of 72229443 is about 8498.7906786789. The cubic root of 72229443 is about 416.4582040592.

The spelling of 72229443 in words is "seventy-two million, two hundred twenty-nine thousand, four hundred forty-three".