72444843 has 24 divisors (see below), whose sum is σ = 106704000. Its totient is φ = 47355264.

The previous prime is 72444829. The next prime is 72444847. The reversal of 72444843 is 34844427.

It is a happy number.

It is not a de Polignac number, because 72444843 - 2⁹ = 72444331 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72444798 and 72444807.

It is not an unprimeable number, because it can be changed into a prime (72444847) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119046 + ... + 119652.

It is an arithmetic number, because the mean of its divisors is an integer number (4446000).

Almost surely, 2^72444843 is an apocalyptic number.

72444843 is a deficient number, since it is larger than the sum of its proper divisors (34259157).

72444843 is a wasteful number, since it uses less digits than its factorization.

72444843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851 (or 848 counting only the distinct ones).

The product of its digits is 86016, while the sum is 36.

The square root of 72444843 is about 8511.4536361306. The cubic root of 72444843 is about 416.8717753542.

The spelling of 72444843 in words is "seventy-two million, four hundred forty-four thousand, eight hundred forty-three".