1090500 has 48 divisors (see below), whose sum is σ = 3179904. Its totient is φ = 290400.

The previous prime is 1090493. The next prime is 1090519. The reversal of 1090500 is 50901.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1090500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1137 + ... + 1863.

It is an arithmetic number, because the mean of its divisors is an integer number (66248).

2^1090500 is an apocalyptic number.

1090500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1589952).

1090500 is an abundant number, since it is smaller than the sum of its proper divisors (2089404).

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

1090500 is a wasteful number, since it uses less digits than its factorization.

1090500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 749 (or 737 counting only the distinct ones).

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 1090500 is about 1044.2700800080. The cubic root of 1090500 is about 102.9299803750.

The spelling of 1090500 in words is "one million, ninety thousand, five hundred".