73126815 has 16 divisors (see below), whose sum is σ = 118750848. Its totient is φ = 38418336.

The previous prime is 73126811. The next prime is 73126819. The reversal of 73126815 is 51862137.

It is an interprime number because it is at equal distance from previous prime (73126811) and next prime (73126819).

It is not a de Polignac number, because 73126815 - 2² = 73126811 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73126811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35377 + ... + 37386.

It is an arithmetic number, because the mean of its divisors is an integer number (7421928).

Almost surely, 2^73126815 is an apocalyptic number.

73126815 is a deficient number, since it is larger than the sum of its proper divisors (45624033).

73126815 is a wasteful number, since it uses less digits than its factorization.

73126815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72838.

The product of its digits is 10080, while the sum is 33.

The square root of 73126815 is about 8551.4218116054. The cubic root of 73126815 is about 418.1757900904.

The spelling of 73126815 in words is "seventy-three million, one hundred twenty-six thousand, eight hundred fifteen".