72445205 has 16 divisors (see below), whose sum is σ = 100756224. Its totient is φ = 48975360.

The previous prime is 72445159. The next prime is 72445207. The reversal of 72445205 is 50254427.

It is a happy number.

It is not a de Polignac number, because 72445205 - 2¹⁴ = 72428821 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72445207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12092 + ... + 17061.

It is an arithmetic number, because the mean of its divisors is an integer number (6297264).

Almost surely, 2^72445205 is an apocalyptic number.

It is an amenable number.

72445205 is a deficient number, since it is larger than the sum of its proper divisors (28311019).

72445205 is a wasteful number, since it uses less digits than its factorization.

72445205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29236.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 72445205 is about 8511.4749015667. The cubic root of 72445205 is about 416.8724697093.

The spelling of 72445205 in words is "seventy-two million, four hundred forty-five thousand, two hundred five".