147728213 has 2 divisors, whose sum is σ = 147728214. Its totient is φ = 147728212.

The previous prime is 147728201. The next prime is 147728219. The reversal of 147728213 is 312827741.

147728213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 136585969 + 11142244 = 11687^2 + 3338^2 .

It is a cyclic number.

It is not a de Polignac number, because 147728213 - 2¹⁴ = 147711829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (147728219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73864106 + 73864107.

It is an arithmetic number, because the mean of its divisors is an integer number (73864107).

Almost surely, 2^147728213 is an apocalyptic number.

It is an amenable number.

147728213 is a deficient number, since it is larger than the sum of its proper divisors (1).

147728213 is an equidigital number, since it uses as much as digits as its factorization.

147728213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18816, while the sum is 35.

The square root of 147728213 is about 12154.3495506753. The cubic root of 147728213 is about 528.6332567385.

The spelling of 147728213 in words is "one hundred forty-seven million, seven hundred twenty-eight thousand, two hundred thirteen".