1028981 has 2 divisors, whose sum is σ = 1028982. Its totient is φ = 1028980.

The previous prime is 1028969. The next prime is 1028999. The reversal of 1028981 is 1898201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 586756 + 442225 = 766^2 + 665^2 .

It is an emirp because it is prime and its reverse (1898201) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1028981 - 2¹⁴ = 1012597 is a prime.

It is a super-2 number, since 2×1028981² = 2117603796722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1028941) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 514490 + 514491.

It is an arithmetic number, because the mean of its divisors is an integer number (514491).

2^1028981 is an apocalyptic number.

It is an amenable number.

1028981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1028981 is an equidigital number, since it uses as much as digits as its factorization.

1028981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 29.

The square root of 1028981 is about 1014.3870070146. The cubic root of 1028981 is about 100.9568485403.

The spelling of 1028981 in words is "one million, twenty-eight thousand, nine hundred eighty-one".