1090920 has 32 divisors (see below), whose sum is σ = 3273120. Its totient is φ = 290880.

The previous prime is 1090919. The next prime is 1090927. The reversal of 1090920 is 290901.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (1090927) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4426 + ... + 4665.

It is an arithmetic number, because the mean of its divisors is an integer number (102285).

2^1090920 is an apocalyptic number.

1090920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1090920 is an abundant number, since it is smaller than the sum of its proper divisors (2182200).

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

1090920 is a wasteful number, since it uses less digits than its factorization.

1090920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9105 (or 9101 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 21.

The square root of 1090920 is about 1044.4711580508. The cubic root of 1090920 is about 102.9431929817.

The spelling of 1090920 in words is "one million, ninety thousand, nine hundred twenty".