1090992 has 80 divisors (see below), whose sum is σ = 3428352. Its totient is φ = 291840.

The previous prime is 1090979. The next prime is 1090997. The reversal of 1090992 is 2990901.

It is not an unprimeable number, because it can be changed into a prime (1090997) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5617 + ... + 5807.

2^1090992 is an apocalyptic number.

1090992 is a gapful number since it is divisible by the number (12) 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 1090992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1714176).

1090992 is an abundant number, since it is smaller than the sum of its proper divisors (2337360).

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

1090992 is a wasteful number, since it uses less digits than its factorization.

1090992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 220 counting only the distinct ones).

The product of its (nonzero) digits is 1458, while the sum is 30.

The square root of 1090992 is about 1044.5056246857. The cubic root of 1090992 is about 102.9454576595.

The spelling of 1090992 in words is "one million, ninety thousand, nine hundred ninety-two".