728769401 has 2 divisors, whose sum is σ = 728769402. Its totient is φ = 728769400.

The previous prime is 728769397. The next prime is 728769407. The reversal of 728769401 is 104967827.

728769401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586802176 + 141967225 = 24224^2 + 11915^2 .

It is an emirp because it is prime and its reverse (104967827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728769401 - 2² = 728769397 is a prime.

It is a super-2 number, since 2×728769401² = 1062209679667797602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (728769407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364384700 + 364384701.

It is an arithmetic number, because the mean of its divisors is an integer number (364384701).

Almost surely, 2^728769401 is an apocalyptic number.

It is an amenable number.

728769401 is a deficient number, since it is larger than the sum of its proper divisors (1).

728769401 is an equidigital number, since it uses as much as digits as its factorization.

728769401 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 728769401 is about 26995.7293103928. The cubic root of 728769401 is about 899.9050932844.

The spelling of 728769401 in words is "seven hundred twenty-eight million, seven hundred sixty-nine thousand, four hundred one".