73128297 has 16 divisors (see below), whose sum is σ = 108964800. Its totient is φ = 43238400.

The previous prime is 73128281. The next prime is 73128299. The reversal of 73128297 is 79282137.

It is not a de Polignac number, because 73128297 - 2⁴ = 73128281 is a prime.

It is not an unprimeable number, because it can be changed into a prime (73128299) 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, 25672 + ... + 28377.

It is an arithmetic number, because the mean of its divisors is an integer number (6810300).

Almost surely, 2^73128297 is an apocalyptic number.

It is an amenable number.

73128297 is a deficient number, since it is larger than the sum of its proper divisors (35836503).

73128297 is a wasteful number, since it uses less digits than its factorization.

73128297 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54104.

The product of its digits is 42336, while the sum is 39.

The square root of 73128297 is about 8551.5084634233. The cubic root of 73128297 is about 418.1786150110.

The spelling of 73128297 in words is "seventy-three million, one hundred twenty-eight thousand, two hundred ninety-seven".