1098026 has 4 divisors (see below), whose sum is σ = 1647042. Its totient is φ = 549012.

The previous prime is 1098023. The next prime is 1098037. The reversal of 1098026 is 6208901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6208901 = 2309 ⋅2689.

It can be written as a sum of positive squares in only one way, i.e., 811801 + 286225 = 901^2 + 535^2 .

It is a super-2 number, since 2×1098026² = 2411322193352, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1097986 and 1098004.

It is not an unprimeable number, because it can be changed into a prime (1098023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 274505 + ... + 274508.

2^1098026 is an apocalyptic number.

1098026 is a deficient number, since it is larger than the sum of its proper divisors (549016).

1098026 is an equidigital number, since it uses as much as digits as its factorization.

1098026 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549015.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 1098026 is about 1047.8673580182. The cubic root of 1098026 is about 103.1662254519.

The spelling of 1098026 in words is "one million, ninety-eight thousand, twenty-six".