728419427 has 2 divisors, whose sum is σ = 728419428. Its totient is φ = 728419426.

The previous prime is 728419411. The next prime is 728419457. The reversal of 728419427 is 724914827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728419427 - 2⁴ = 728419411 is a prime.

It is not a weakly prime, because it can be changed into another prime (728419457) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364209713 + 364209714.

It is an arithmetic number, because the mean of its divisors is an integer number (364209714).

Almost surely, 2^728419427 is an apocalyptic number.

728419427 is a deficient number, since it is larger than the sum of its proper divisors (1).

728419427 is an equidigital number, since it uses as much as digits as its factorization.

728419427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 225792, while the sum is 44.

The square root of 728419427 is about 26989.2465067108. The cubic root of 728419427 is about 899.7610176172.

The spelling of 728419427 in words is "seven hundred twenty-eight million, four hundred nineteen thousand, four hundred twenty-seven".