1098238 has 8 divisors (see below), whose sum is σ = 1734120. Its totient is φ = 520200.

The previous prime is 1098233. The next prime is 1098269. The reversal of 1098238 is 8328901.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×1098238² = 2412253409288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14413 + ... + 14488.

It is an arithmetic number, because the mean of its divisors is an integer number (216765).

2^1098238 is an apocalyptic number.

1098238 is a deficient number, since it is larger than the sum of its proper divisors (635882).

1098238 is a wasteful number, since it uses less digits than its factorization.

1098238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28922.

The product of its (nonzero) digits is 3456, while the sum is 31.

The square root of 1098238 is about 1047.9685109773. The cubic root of 1098238 is about 103.1728645881.

It can be divided in two parts, 10982 and 38, that multiplied together give a square (417316 = 646²).

The spelling of 1098238 in words is "one million, ninety-eight thousand, two hundred thirty-eight".