73540229 has 20 divisors (see below), whose sum is σ = 86887020. Its totient is φ = 62233920.

The previous prime is 73540219. The next prime is 73540261. The reversal of 73540229 is 92204537.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 50481025 + 23059204 = 7105^2 + 4802^2 .

It is a de Polignac number, because none of the positive numbers 2^k-73540229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 73540195 and 73540204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73540219) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 261569 + ... + 261849.

It is an arithmetic number, because the mean of its divisors is an integer number (4344351).

Almost surely, 2^73540229 is an apocalyptic number.

It is an amenable number.

73540229 is a deficient number, since it is larger than the sum of its proper divisors (13346791).

73540229 is an equidigital number, since it uses as much as digits as its factorization.

73540229 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 418 (or 397 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 73540229 is about 8575.5599817155. The cubic root of 73540229 is about 418.9623458852.

The spelling of 73540229 in words is "seventy-three million, five hundred forty thousand, two hundred twenty-nine".