1090980 has 144 divisors (see below), whose sum is σ = 3931200. Its totient is φ = 241920.

The previous prime is 1090979. The next prime is 1090997. The reversal of 1090980 is 890901.

1090980 = T₇₅ + T₇₆ + ... + T₁₉₀.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37606 + ... + 37634.

It is an arithmetic number, because the mean of its divisors is an integer number (27300).

2^1090980 is an apocalyptic number.

1090980 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a pronic number, being equal to 1044×1045.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1090980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1965600).

1090980 is an abundant number, since it is smaller than the sum of its proper divisors (2840220).

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

1090980 is a wasteful number, since it uses less digits than its factorization.

1090980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74 (or 69 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

The square root of 1090980 is about 1044.4998803255. The cubic root of 1090980 is about 102.9450802201.

The spelling of 1090980 in words is "one million, ninety thousand, nine hundred eighty".