1028301681 has 12 divisors (see below), whose sum is σ = 1507043216. Its totient is φ = 623212920.

The previous prime is 1028301671. The next prime is 1028301709. The reversal of 1028301681 is 1861038201.

It is not a de Polignac number, because 1028301681 - 2⁵ = 1028301649 is a prime.

It is a super-2 number, since 2×1028301681² = 2114808694294851522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1028301671) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1416031 + ... + 1416756.

Almost surely, 2^1028301681 is an apocalyptic number.

1028301681 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1028301681 is a deficient number, since it is larger than the sum of its proper divisors (478741535).

1028301681 is a wasteful number, since it uses less digits than its factorization.

1028301681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2832812 (or 2832801 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 30.

The square root of 1028301681 is about 32067.1433245932. The cubic root of 1028301681 is about 1009.3462687857.

Adding to 1028301681 its reverse (1861038201), we get a palindrome (2889339882).

The spelling of 1028301681 in words is "one billion, twenty-eight million, three hundred one thousand, six hundred eighty-one".