1090139280 has 160 divisors (see below), whose sum is σ = 3734118144. Its totient is φ = 261685248.

The previous prime is 1090139243. The next prime is 1090139299. The reversal of 1090139280 is 829310901.

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, 88032 + ... + 99648.

Almost surely, 2^1090139280 is an apocalyptic number.

1090139280 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 1090139280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1867059072).

1090139280 is an abundant number, since it is smaller than the sum of its proper divisors (2643978864).

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

1090139280 is a wasteful number, since it uses less digits than its factorization.

1090139280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11673 (or 11667 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 33.

The square root of 1090139280 is about 33017.2573058393. The cubic root of 1090139280 is about 1029.1862992498.

The spelling of 1090139280 in words is "one billion, ninety million, one hundred thirty-nine thousand, two hundred eighty".