1098838 has 12 divisors (see below), whose sum is σ = 1785348. Its totient is φ = 507000.

The previous prime is 1098833. The next prime is 1098847. The reversal of 1098838 is 8388901.

It is a junction number, because it is equal to n+sod(n) for n = 1098797 and 1098806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098833) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1288 + ... + 1963.

It is an arithmetic number, because the mean of its divisors is an integer number (148779).

2^1098838 is an apocalyptic number.

1098838 is a deficient number, since it is larger than the sum of its proper divisors (686510).

1098838 is a wasteful number, since it uses less digits than its factorization.

1098838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3279 (or 3266 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 1098838 is about 1048.2547400322. The cubic root of 1098838 is about 103.1916499664.

It can be divided in two parts, 10988 and 38, that added together give a triangular number (11026 = T₁₄₈).

The spelling of 1098838 in words is "one million, ninety-eight thousand, eight hundred thirty-eight".