72436433 has 4 divisors (see below), whose sum is σ = 72540468. Its totient is φ = 72332400.

The previous prime is 72436423. The next prime is 72436451. The reversal of 72436433 is 33463427.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64529089 + 7907344 = 8033^2 + 2812^2 .

It is a cyclic number.

It is not a de Polignac number, because 72436433 - 2¹⁶ = 72370897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 72436433.

It is not an unprimeable number, because it can be changed into a prime (72436423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50966 + ... + 52367.

It is an arithmetic number, because the mean of its divisors is an integer number (18135117).

Almost surely, 2^72436433 is an apocalyptic number.

It is an amenable number.

72436433 is a deficient number, since it is larger than the sum of its proper divisors (104035).

72436433 is a wasteful number, since it uses less digits than its factorization.

72436433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104034.

The product of its digits is 36288, while the sum is 32.

The square root of 72436433 is about 8510.9595816218. The cubic root of 72436433 is about 416.8556434155.

The spelling of 72436433 in words is "seventy-two million, four hundred thirty-six thousand, four hundred thirty-three".