1026981 has 12 divisors (see below), whose sum is σ = 1512108. Its totient is φ = 671424.

The previous prime is 1026979. The next prime is 1026989. The reversal of 1026981 is 1896201.

It can be written as a sum of positive squares in 2 ways, for example, as 370881 + 656100 = 609^2 + 810^2 .

It is not a de Polignac number, because 1026981 - 2¹ = 1026979 is a prime.

It is a super-2 number, since 2×1026981² = 2109379948722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1026989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 600 + ... + 1553.

It is an arithmetic number, because the mean of its divisors is an integer number (126009).

2^1026981 is an apocalyptic number.

It is an amenable number.

1026981 is a deficient number, since it is larger than the sum of its proper divisors (485127).

1026981 is a wasteful number, since it uses less digits than its factorization.

1026981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212 (or 2209 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 27.

The square root of 1026981 is about 1013.4007104793. The cubic root of 1026981 is about 100.8913971677.

The spelling of 1026981 in words is "one million, twenty-six thousand, nine hundred eighty-one".