1109726240 has 96 divisors (see below), whose sum is σ = 3015823104. Its totient is φ = 377994240.

The previous prime is 1109726239. The next prime is 1109726249. The reversal of 1109726240 is 426279011.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 1109726197 and 1109726206.

It is not an unprimeable number, because it can be changed into a prime (1109726249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172685 + ... + 178995.

It is an arithmetic number, because the mean of its divisors is an integer number (31414824).

Almost surely, 2^1109726240 is an apocalyptic number.

1109726240 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 1109726240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1507911552).

1109726240 is an abundant number, since it is smaller than the sum of its proper divisors (1906096864).

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

1109726240 is a wasteful number, since it uses less digits than its factorization.

1109726240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6490 (or 6482 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 1109726240 is about 33312.5537898252. The cubic root of 1109726240 is about 1035.3136780962.

The spelling of 1109726240 in words is "one billion, one hundred nine million, seven hundred twenty-six thousand, two hundred forty".