73028621 has 2 divisors, whose sum is σ = 73028622. Its totient is φ = 73028620.

The previous prime is 73028603. The next prime is 73028633. The reversal of 73028621 is 12682037.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65383396 + 7645225 = 8086^2 + 2765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73028621 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73028671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36514310 + 36514311.

It is an arithmetic number, because the mean of its divisors is an integer number (36514311).

Almost surely, 2^73028621 is an apocalyptic number.

It is an amenable number.

73028621 is a deficient number, since it is larger than the sum of its proper divisors (1).

73028621 is an equidigital number, since it uses as much as digits as its factorization.

73028621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 73028621 is about 8545.6784985161. The cubic root of 73028621 is about 417.9885320755.

The spelling of 73028621 in words is "seventy-three million, twenty-eight thousand, six hundred twenty-one".