1240088256 has 336 divisors, whose sum is σ = 4257995040. Its totient is φ = 340623360.

The previous prime is 1240088251. The next prime is 1240088261. The reversal of 1240088256 is 6528800421.

It is an interprime number because it is at equal distance from previous prime (1240088251) and next prime (1240088261).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1240088256.

It is not an unprimeable number, because it can be changed into a prime (1240088251) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3123450 + ... + 3123846.

Almost surely, 2^1240088256 is an apocalyptic number.

1240088256 is a gapful number since it is divisible by the number (16) 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 1240088256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2128997520).

1240088256 is an abundant number, since it is smaller than the sum of its proper divisors (3017906784).

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

1240088256 is a wasteful number, since it uses less digits than its factorization.

1240088256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472 (or 459 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 1240088256 is about 35214.8868520119. The cubic root of 1240088256 is about 1074.3625587425.

Adding to 1240088256 its reverse (6528800421), we get a palindrome (7768888677).

The spelling of 1240088256 in words is "one billion, two hundred forty million, eighty-eight thousand, two hundred fifty-six".