1099338240 has 720 divisors, whose sum is σ = 4780569024. Its totient is φ = 210862080.

The previous prime is 1099338239. The next prime is 1099338257. The reversal of 1099338240 is 428339901.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 84564474 + ... + 84564486.

Almost surely, 2^1099338240 is an apocalyptic number.

1099338240 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 1099338240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2390284512).

1099338240 is an abundant number, since it is smaller than the sum of its proper divisors (3681230784).

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

1099338240 is a wasteful number, since it uses less digits than its factorization.

1099338240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 1099338240 is about 33156.2699952814. The cubic root of 1099338240 is about 1032.0730673583.

The spelling of 1099338240 in words is "one billion, ninety-nine million, three hundred thirty-eight thousand, two hundred forty".