72834005 has 4 divisors (see below), whose sum is σ = 87400812. Its totient is φ = 58267200.

The previous prime is 72833989. The next prime is 72834007. The reversal of 72834005 is 50043827.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 50043827 = 31 ⋅1614317.

It can be written as a sum of positive squares in 2 ways, for example, as 19280881 + 53553124 = 4391^2 + 7318^2 .

It is not a de Polignac number, because 72834005 - 2⁴ = 72833989 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 (72834007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7283396 + ... + 7283405.

It is an arithmetic number, because the mean of its divisors is an integer number (21850203).

Almost surely, 2^72834005 is an apocalyptic number.

It is an amenable number.

72834005 is a deficient number, since it is larger than the sum of its proper divisors (14566807).

72834005 is a wasteful number, since it uses less digits than its factorization.

72834005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14566806.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 72834005 is about 8534.2840941698. The cubic root of 72834005 is about 417.6168986723.

The spelling of 72834005 in words is "seventy-two million, eight hundred thirty-four thousand, five".