1098856 has 16 divisors (see below), whose sum is σ = 2247840. Its totient is φ = 499440.

The previous prime is 1098847. The next prime is 1098953. The reversal of 1098856 is 6588901.

1098856 = T₃₀₅ + T₃₀₆ + ... + T₃₂₆.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6156 + ... + 6331.

It is an arithmetic number, because the mean of its divisors is an integer number (140490).

2^1098856 is an apocalyptic number.

It is an amenable number.

1098856 is an abundant number, since it is smaller than the sum of its proper divisors (1148984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1098856 is a wasteful number, since it uses less digits than its factorization.

1098856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12504 (or 12500 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 37.

The square root of 1098856 is about 1048.2633256964. The cubic root of 1098856 is about 103.1922134221.

The spelling of 1098856 in words is "one million, ninety-eight thousand, eight hundred fifty-six".