1026731 has 4 divisors (see below), whose sum is σ = 1041264. Its totient is φ = 1012200.

The previous prime is 1026709. The next prime is 1026733. The reversal of 1026731 is 1376201.

1026731 = 4² + 5² + ... + 145².

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1376201 = 17 ⋅80953.

It is a cyclic number.

It is not a de Polignac number, because 1026731 - 2⁶ = 1026667 is a prime.

It is a super-2 number, since 2×1026731² = 2108353092722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1026733) 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 3 ways as a sum of consecutive naturals, for example, 7160 + ... + 7301.

It is an arithmetic number, because the mean of its divisors is an integer number (260316).

2^1026731 is an apocalyptic number.

1026731 is a deficient number, since it is larger than the sum of its proper divisors (14533).

1026731 is an equidigital number, since it uses as much as digits as its factorization.

1026731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14532.

The product of its (nonzero) digits is 252, while the sum is 20.

The square root of 1026731 is about 1013.2773559100. The cubic root of 1026731 is about 100.8832097731.

The spelling of 1026731 in words is "one million, twenty-six thousand, seven hundred thirty-one".