1256433248 has 24 divisors (see below), whose sum is σ = 2826975312. Its totient is φ = 538471296.

The previous prime is 1256433247. The next prime is 1256433257. The reversal of 1256433248 is 8423346521.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256433247) 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, 2804315 + ... + 2804762.

It is an arithmetic number, because the mean of its divisors is an integer number (117790638).

Almost surely, 2^1256433248 is an apocalyptic number.

It is an amenable number.

1256433248 is an abundant number, since it is smaller than the sum of its proper divisors (1570542064).

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

1256433248 is an equidigital number, since it uses as much as digits as its factorization.

1256433248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5609094 (or 5609086 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 1256433248 is about 35446.2021660995. The cubic root of 1256433248 is about 1079.0621854302.

Adding to 1256433248 its reverse (8423346521), we get a palindrome (9679779769).

The spelling of 1256433248 in words is "one billion, two hundred fifty-six million, four hundred thirty-three thousand, two hundred forty-eight".