1098790 has 32 divisors (see below), whose sum is σ = 2467584. Its totient is φ = 342240.

The previous prime is 1098787. The next prime is 1098791. The reversal of 1098790 is 978901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1098791) 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 in 15 ways as a sum of consecutive naturals, for example, 57 + ... + 1483.

It is an arithmetic number, because the mean of its divisors is an integer number (77112).

2^1098790 is an apocalyptic number.

1098790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1098790 is an abundant number, since it is smaller than the sum of its proper divisors (1368794).

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

1098790 is a wasteful number, since it uses less digits than its factorization.

1098790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1452.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1098790 is about 1048.2318445840. The cubic root of 1098790 is about 103.1901473878.

The spelling of 1098790 in words is "one million, ninety-eight thousand, seven hundred ninety".