728837227 has 2 divisors, whose sum is σ = 728837228. Its totient is φ = 728837226.

The previous prime is 728837203. The next prime is 728837297. The reversal of 728837227 is 722738827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728837227 - 2⁷ = 728837099 is a prime.

It is a super-2 number, since 2×728837227² = 1062407406922099058, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (728837297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364418613 + 364418614.

It is an arithmetic number, because the mean of its divisors is an integer number (364418614).

Almost surely, 2^728837227 is an apocalyptic number.

728837227 is a deficient number, since it is larger than the sum of its proper divisors (1).

728837227 is an equidigital number, since it uses as much as digits as its factorization.

728837227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 526848, while the sum is 46.

The square root of 728837227 is about 26996.9855169054. The cubic root of 728837227 is about 899.9330102402.

The spelling of 728837227 in words is "seven hundred twenty-eight million, eight hundred thirty-seven thousand, two hundred twenty-seven".