72280443 has 8 divisors (see below), whose sum is σ = 96685056. Its totient is φ = 48031400.

The previous prime is 72280409. The next prime is 72280457. The reversal of 72280443 is 34408227.

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 72280443 - 2¹⁶ = 72214907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 72280443.

It is not an unprimeable number, because it can be changed into a prime (72280493) 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, 37803 + ... + 39668.

It is an arithmetic number, because the mean of its divisors is an integer number (12085632).

Almost surely, 2^72280443 is an apocalyptic number.

72280443 is a deficient number, since it is larger than the sum of its proper divisors (24404613).

72280443 is a wasteful number, since it uses less digits than its factorization.

72280443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77785.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 72280443 is about 8501.7905761081. The cubic root of 72280443 is about 416.5561990529.

The spelling of 72280443 in words is "seventy-two million, two hundred eighty thousand, four hundred forty-three".