1240730880 has 144 divisors (see below), whose sum is σ = 4004637504. Its totient is φ = 327352320.

The previous prime is 1240730833. The next prime is 1240730899. The reversal of 1240730880 is 880370421.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 370815 + ... + 374145.

Almost surely, 2^1240730880 is an apocalyptic number.

1240730880 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 1240730880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2002318752).

1240730880 is an abundant number, since it is smaller than the sum of its proper divisors (2763906624).

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

1240730880 is an equidigital number, since it uses as much as digits as its factorization.

1240730880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452 (or 3438 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 33.

The square root of 1240730880 is about 35224.0099931850. The cubic root of 1240730880 is about 1074.5481078857.

The spelling of 1240730880 in words is "one billion, two hundred forty million, seven hundred thirty thousand, eight hundred eighty".