1090260380 has 96 divisors (see below), whose sum is σ = 2552352768. Its totient is φ = 387878400.

The previous prime is 1090260373. The next prime is 1090260407. The reversal of 1090260380 is 830620901.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3483104 + ... + 3483416.

It is an arithmetic number, because the mean of its divisors is an integer number (26587008).

Almost surely, 2^1090260380 is an apocalyptic number.

1090260380 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 1090260380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1276176384).

1090260380 is an abundant number, since it is smaller than the sum of its proper divisors (1462092388).

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

1090260380 is a wasteful number, since it uses less digits than its factorization.

1090260380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 1090260380 is about 33019.0911443668. The cubic root of 1090260380 is about 1029.2244074831.

The spelling of 1090260380 in words is "one billion, ninety million, two hundred sixty thousand, three hundred eighty".