73208381 has 4 divisors (see below), whose sum is σ = 73735200. Its totient is φ = 72681564.

The previous prime is 73208371. The next prime is 73208389. The reversal of 73208381 is 18380237.

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: 18380237 = 199 ⋅92363.

It is a cyclic number.

It is not a de Polignac number, because 73208381 - 2¹⁰ = 73207357 is a prime.

It is a super-2 number, since 2×73208381² = 10718934097282322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73208389) 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, 263201 + ... + 263478.

It is an arithmetic number, because the mean of its divisors is an integer number (18433800).

Almost surely, 2^73208381 is an apocalyptic number.

It is an amenable number.

73208381 is a deficient number, since it is larger than the sum of its proper divisors (526819).

73208381 is a wasteful number, since it uses less digits than its factorization.

73208381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526818.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 73208381 is about 8556.1896309046. The cubic root of 73208381 is about 418.3312107460.

The spelling of 73208381 in words is "seventy-three million, two hundred eight thousand, three hundred eighty-one".