1256382260 has 48 divisors (see below), whose sum is σ = 3112596480. Its totient is φ = 416862720.

The previous prime is 1256382247. The next prime is 1256382269. The reversal of 1256382260 is 622836521.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 1256382260.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1256382269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 140405 + ... + 149084.

It is an arithmetic number, because the mean of its divisors is an integer number (64845760).

Almost surely, 2^1256382260 is an apocalyptic number.

1256382260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1256382260 is an abundant number, since it is smaller than the sum of its proper divisors (1856214220).

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

1256382260 is a wasteful number, since it uses less digits than its factorization.

1256382260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289536 (or 289534 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 35.

The square root of 1256382260 is about 35445.4829280121. The cubic root of 1256382260 is about 1079.0475885632.

The spelling of 1256382260 in words is "one billion, two hundred fifty-six million, three hundred eighty-two thousand, two hundred sixty".