1153598720 has 36 divisors (see below), whose sum is σ = 2763232500. Its totient is φ = 461438976.

The previous prime is 1153598713. The next prime is 1153598729. The reversal of 1153598720 is 278953511.

It can be written as a sum of positive squares in 2 ways, for example, as 317694976 + 835903744 = 17824^2 + 28912^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1153598729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449345 + ... + 451904.

Almost surely, 2^1153598720 is an apocalyptic number.

1153598720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1153598720 is an abundant number, since it is smaller than the sum of its proper divisors (1609633780).

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

1153598720 is an frugal number, since it uses more digits than its factorization.

1153598720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901270 (or 901256 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 41.

The square root of 1153598720 is about 33964.6687014609. The cubic root of 1153598720 is about 1048.7812677518.

The spelling of 1153598720 in words is "one billion, one hundred fifty-three million, five hundred ninety-eight thousand, seven hundred twenty".