1296234240 has 324 divisors, whose sum is σ = 4874461704. Its totient is φ = 292712448.

The previous prime is 1296234227. The next prime is 1296234301. The reversal of 1296234240 is 424326921.

It is a congruent number.

It is an unprimeable number.

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 35 ways as a sum of consecutive naturals, for example, 15617239 + ... + 15617321.

Almost surely, 2^1296234240 is an apocalyptic number.

1296234240 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 1296234240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2437230852).

1296234240 is an abundant number, since it is smaller than the sum of its proper divisors (3578227464).

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

1296234240 is an frugal number, since it uses more digits than its factorization.

1296234240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 100 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 1296234240 is about 36003.2531863441. The cubic root of 1296234240 is about 1090.3380372867.

The spelling of 1296234240 in words is "one billion, two hundred ninety-six million, two hundred thirty-four thousand, two hundred forty".