73263289 has 4 divisors (see below), whose sum is σ = 79923600. Its totient is φ = 66602980.

The previous prime is 73263263. The next prime is 73263301. The reversal of 73263289 is 98236237.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 98236237 = 11 ⋅8930567.

It is a cyclic number.

It is not a de Polignac number, because 73263289 - 2⁷ = 73263161 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73263389) 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, 3330139 + ... + 3330160.

It is an arithmetic number, because the mean of its divisors is an integer number (19980900).

Almost surely, 2^73263289 is an apocalyptic number.

It is an amenable number.

73263289 is a deficient number, since it is larger than the sum of its proper divisors (6660311).

73263289 is a wasteful number, since it uses less digits than its factorization.

73263289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6660310.

The product of its digits is 108864, while the sum is 40.

The square root of 73263289 is about 8559.3977007731. The cubic root of 73263289 is about 418.4357706775.

It can be divided in two parts, 73 and 263289, that added together give a palindrome (263362).

The spelling of 73263289 in words is "seventy-three million, two hundred sixty-three thousand, two hundred eighty-nine".