72814349 has 4 divisors (see below), whose sum is σ = 77097564. Its totient is φ = 68531136.

The previous prime is 72814337. The next prime is 72814387. The reversal of 72814349 is 94341827.

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 25300900 + 47513449 = 5030^2 + 6893^2 .

It is a cyclic number.

It is not a de Polignac number, because 72814349 - 2⁴ = 72814333 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 (72814649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2141582 + ... + 2141615.

It is an arithmetic number, because the mean of its divisors is an integer number (19274391).

Almost surely, 2^72814349 is an apocalyptic number.

It is an amenable number.

72814349 is a deficient number, since it is larger than the sum of its proper divisors (4283215).

72814349 is a wasteful number, since it uses less digits than its factorization.

72814349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4283214.

The product of its digits is 48384, while the sum is 38.

The square root of 72814349 is about 8533.1324260204. The cubic root of 72814349 is about 417.5793273195.

The spelling of 72814349 in words is "seventy-two million, eight hundred fourteen thousand, three hundred forty-nine".