73028569 has 2 divisors, whose sum is σ = 73028570. Its totient is φ = 73028568.

The previous prime is 73028563. The next prime is 73028573. The reversal of 73028569 is 96582037.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70778569 + 2250000 = 8413^2 + 1500^2 .

It is a cyclic number.

It is not a de Polignac number, because 73028569 - 2³ = 73028561 is a prime.

It is a super-2 number, since 2×73028569² = 10666343780375522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (73028561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36514284 + 36514285.

It is an arithmetic number, because the mean of its divisors is an integer number (36514285).

Almost surely, 2^73028569 is an apocalyptic number.

It is an amenable number.

73028569 is a deficient number, since it is larger than the sum of its proper divisors (1).

73028569 is an equidigital number, since it uses as much as digits as its factorization.

73028569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 73028569 is about 8545.6754560421. The cubic root of 73028569 is about 417.9884328660.

The spelling of 73028569 in words is "seventy-three million, twenty-eight thousand, five hundred sixty-nine".