1090308240 has 240 divisors, whose sum is σ = 4207552128. Its totient is φ = 247855104.

The previous prime is 1090308239. The next prime is 1090308253. The reversal of 1090308240 is 428030901.

It is a tau number, because it is divible by the number of its divisors (240).

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, 1143604 + ... + 1144556.

Almost surely, 2^1090308240 is an apocalyptic number.

1090308240 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 1090308240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2103776064).

1090308240 is an abundant number, since it is smaller than the sum of its proper divisors (3117243888).

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

1090308240 is a wasteful number, since it uses less digits than its factorization.

1090308240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1206 (or 1197 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1090308240 is about 33019.8158686568. The cubic root of 1090308240 is about 1029.2394674817.

The spelling of 1090308240 in words is "one billion, ninety million, three hundred eight thousand, two hundred forty".