72303229 has 2 divisors, whose sum is σ = 72303230. Its totient is φ = 72303228.

The previous prime is 72303221. The next prime is 72303247. The reversal of 72303229 is 92230327.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52925625 + 19377604 = 7275^2 + 4402^2 .

It is a cyclic number.

It is not a de Polignac number, because 72303229 - 2³ = 72303221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 72303197 and 72303206.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (72303221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36151614 + 36151615.

It is an arithmetic number, because the mean of its divisors is an integer number (36151615).

Almost surely, 2^72303229 is an apocalyptic number.

It is an amenable number.

72303229 is a deficient number, since it is larger than the sum of its proper divisors (1).

72303229 is an equidigital number, since it uses as much as digits as its factorization.

72303229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 72303229 is about 8503.1305411595. The cubic root of 72303229 is about 416.5999667810.

The spelling of 72303229 in words is "seventy-two million, three hundred three thousand, two hundred twenty-nine".