73138115 has 4 divisors (see below), whose sum is σ = 87765744. Its totient is φ = 58510488.

The previous prime is 73138081. The next prime is 73138123. The reversal of 73138115 is 51183137.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51183137 = 317 ⋅161461.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73138115 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313807 + ... + 7313816.

It is an arithmetic number, because the mean of its divisors is an integer number (21941436).

Almost surely, 2^73138115 is an apocalyptic number.

73138115 is a deficient number, since it is larger than the sum of its proper divisors (14627629).

73138115 is a wasteful number, since it uses less digits than its factorization.

73138115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14627628.

The product of its digits is 2520, while the sum is 29.

The square root of 73138115 is about 8552.0824949248. The cubic root of 73138115 is about 418.1973286694.

The spelling of 73138115 in words is "seventy-three million, one hundred thirty-eight thousand, one hundred fifteen".