73308947 has 4 divisors (see below), whose sum is σ = 77621256. Its totient is φ = 68996640.

The previous prime is 73308941. The next prime is 73308967. The reversal of 73308947 is 74980337.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74980337 = 109 ⋅687893.

It is a cyclic number.

It is not a de Polignac number, because 73308947 - 2¹² = 73304851 is a prime.

It is a Duffinian number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (73308941) 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, 2156129 + ... + 2156162.

It is an arithmetic number, because the mean of its divisors is an integer number (19405314).

Almost surely, 2^73308947 is an apocalyptic number.

73308947 is a deficient number, since it is larger than the sum of its proper divisors (4312309).

73308947 is a wasteful number, since it uses less digits than its factorization.

73308947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4312308.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 73308947 is about 8562.0644122782. The cubic root of 73308947 is about 418.5226762901.

The spelling of 73308947 in words is "seventy-three million, three hundred eight thousand, nine hundred forty-seven".