73281326 has 4 divisors (see below), whose sum is σ = 109921992. Its totient is φ = 36640662.

The previous prime is 73281323. The next prime is 73281337. The reversal of 73281326 is 62318237.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 73281292 and 73281301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73281323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18320330 + ... + 18320333.

It is an arithmetic number, because the mean of its divisors is an integer number (27480498).

Almost surely, 2^73281326 is an apocalyptic number.

73281326 is a deficient number, since it is larger than the sum of its proper divisors (36640666).

73281326 is a wasteful number, since it uses less digits than its factorization.

73281326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36640665.

The product of its digits is 12096, while the sum is 32.

The square root of 73281326 is about 8560.4512731514. The cubic root of 73281326 is about 418.4701066858.

The spelling of 73281326 in words is "seventy-three million, two hundred eighty-one thousand, three hundred twenty-six".