73245213 has 18 divisors (see below), whose sum is σ = 109583994. Its totient is φ = 47141472.

The previous prime is 73245173. The next prime is 73245217. The reversal of 73245213 is 31254237.

It can be written as a sum of positive squares in 3 ways, for example, as 17489124 + 55756089 = 4182^2 + 7467^2 .

It is not a de Polignac number, because 73245213 - 2⁶ = 73245149 is a prime.

It is a super-2 number, since 2×73245213² = 10729722454830738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73245217) 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 17 ways as a sum of consecutive naturals, for example, 2731 + ... + 12407.

Almost surely, 2^73245213 is an apocalyptic number.

It is an amenable number.

73245213 is a deficient number, since it is larger than the sum of its proper divisors (36338781).

73245213 is a wasteful number, since it uses less digits than its factorization.

73245213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9741 (or 9709 counting only the distinct ones).

The product of its digits is 5040, while the sum is 27.

The square root of 73245213 is about 8558.3417202166. The cubic root of 73245213 is about 418.4013547727.

The spelling of 73245213 in words is "seventy-three million, two hundred forty-five thousand, two hundred thirteen".