73129315 has 16 divisors (see below), whose sum is σ = 102340800. Its totient is φ = 50144640.

The previous prime is 73129313. The next prime is 73129319. The reversal of 73129315 is 51392137.

73129315 = 280² + 281² + ... + 622².

It is not a de Polignac number, because 73129315 - 2¹ = 73129313 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73129313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19606 + ... + 23035.

It is an arithmetic number, because the mean of its divisors is an integer number (6396300).

Almost surely, 2^73129315 is an apocalyptic number.

73129315 is a deficient number, since it is larger than the sum of its proper divisors (29211485).

73129315 is an equidigital number, since it uses as much as digits as its factorization.

73129315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42667 (or 42653 counting only the distinct ones).

The product of its digits is 5670, while the sum is 31.

The square root of 73129315 is about 8551.5679848786. The cubic root of 73129315 is about 418.1805554539.

The spelling of 73129315 in words is "seventy-three million, one hundred twenty-nine thousand, three hundred fifteen".