1240485280 has 24 divisors (see below), whose sum is σ = 2930646852. Its totient is φ = 496194048.

The previous prime is 1240485271. The next prime is 1240485283. The reversal of 1240485280 is 825840421.

It can be written as a sum of positive squares in 2 ways, for example, as 1175392656 + 65092624 = 34284^2 + 8068^2 .

It is not an unprimeable number, because it can be changed into a prime (1240485283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3876357 + ... + 3876676.

Almost surely, 2^1240485280 is an apocalyptic number.

1240485280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1240485280 is an abundant number, since it is smaller than the sum of its proper divisors (1690161572).

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

1240485280 is an equidigital number, since it uses as much as digits as its factorization.

1240485280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7753048 (or 7753040 counting only the distinct ones).

The product of its (nonzero) digits is 20480, while the sum is 34.

The square root of 1240485280 is about 35220.5235622641. The cubic root of 1240485280 is about 1074.4772017140.

The spelling of 1240485280 in words is "one billion, two hundred forty million, four hundred eighty-five thousand, two hundred eighty".