73220029 has 2 divisors, whose sum is σ = 73220030. Its totient is φ = 73220028.

The previous prime is 73220023. The next prime is 73220039. The reversal of 73220029 is 92002237.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 50083929 + 23136100 = 7077^2 + 4810^2 .

It is a cyclic number.

It is not a de Polignac number, because 73220029 - 2⁵ = 73219997 is a prime.

It is a super-2 number, since 2×73220029² = 10722345293521682, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 73219985 and 73220012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73220023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36610014 + 36610015.

It is an arithmetic number, because the mean of its divisors is an integer number (36610015).

Almost surely, 2^73220029 is an apocalyptic number.

It is an amenable number.

73220029 is a deficient number, since it is larger than the sum of its proper divisors (1).

73220029 is an equidigital number, since it uses as much as digits as its factorization.

73220029 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 73220029 is about 8556.8702806575. The cubic root of 73220029 is about 418.3533961091.

The spelling of 73220029 in words is "seventy-three million, two hundred twenty thousand, twenty-nine".