73281413 has 8 divisors (see below), whose sum is σ = 75436032. Its totient is φ = 71151696.

The previous prime is 73281401. The next prime is 73281421. The reversal of 73281413 is 31418237.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73281413 - 2¹² = 73277317 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73281493) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 170 + ... + 12107.

It is an arithmetic number, because the mean of its divisors is an integer number (9429504).

Almost surely, 2^73281413 is an apocalyptic number.

It is an amenable number.

73281413 is a deficient number, since it is larger than the sum of its proper divisors (2154619).

73281413 is a wasteful number, since it uses less digits than its factorization.

73281413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12451.

The product of its digits is 4032, while the sum is 29.

The square root of 73281413 is about 8560.4563546577. The cubic root of 73281413 is about 418.4702722891.

The spelling of 73281413 in words is "seventy-three million, two hundred eighty-one thousand, four hundred thirteen".