1028677329 has 9 divisors (see below), whose sum is σ = 1486006249. Its totient is φ = 685720740.

The previous prime is 1028677319. The next prime is 1028677333. The reversal of 1028677329 is 9237768201.

The square root of 1028677329 is 32073.

It is a perfect power (a square), and thus also a powerful number.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 1028677329 - 2¹⁹ = 1028153041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028677319) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 90874 + ... + 101564.

Almost surely, 2^1028677329 is an apocalyptic number.

1028677329 is the 32073-rd square number.

1028677329 is the 16037-th centered octagonal number.

It is an amenable number.

1028677329 is a deficient number, since it is larger than the sum of its proper divisors (457328920).

1028677329 is an frugal number, since it uses more digits than its factorization.

1028677329 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21388 (or 10694 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The cubic root of 1028677329 is about 1009.4691616272.

Multiplying 1028677329 by its product of nonzero digits (254016), we get a square (261300500403264 = 16164792²).

The spelling of 1028677329 in words is "one billion, twenty-eight million, six hundred seventy-seven thousand, three hundred twenty-nine".