1149798240 has 144 divisors (see below), whose sum is σ = 4069145808. Its totient is φ = 306602496.

The previous prime is 1149798239. The next prime is 1149798269. The reversal of 1149798240 is 428979411.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24094 + ... + 53666.

It is an arithmetic number, because the mean of its divisors is an integer number (28257957).

Almost surely, 2^1149798240 is an apocalyptic number.

1149798240 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 1149798240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2034572904).

1149798240 is an abundant number, since it is smaller than the sum of its proper divisors (2919347568).

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

1149798240 is an equidigital number, since it uses as much as digits as its factorization.

1149798240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29603 (or 29583 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 1149798240 is about 33908.6749962307. The cubic root of 1149798240 is about 1047.6282794884.

The spelling of 1149798240 in words is "one billion, one hundred forty-nine million, seven hundred ninety-eight thousand, two hundred forty".