1256949484 has 48 divisors (see below), whose sum is σ = 2696198400. Its totient is φ = 500700096.

The previous prime is 1256949481. The next prime is 1256949493. The reversal of 1256949484 is 4849496521.

It is not an unprimeable number, because it can be changed into a prime (1256949481) 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, 5907 + ... + 50485.

It is an arithmetic number, because the mean of its divisors is an integer number (56170800).

Almost surely, 2^1256949484 is an apocalyptic number.

1256949484 is a gapful number since it is divisible by the number (14) 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 1256949484, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1348099200).

1256949484 is an abundant number, since it is smaller than the sum of its proper divisors (1439248916).

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

1256949484 is a wasteful number, since it uses less digits than its factorization.

1256949484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44662 (or 44660 counting only the distinct ones).

The product of its digits is 2488320, while the sum is 52.

The square root of 1256949484 is about 35453.4833831600. The cubic root of 1256949484 is about 1079.2099514634.

The spelling of 1256949484 in words is "one billion, two hundred fifty-six million, nine hundred forty-nine thousand, four hundred eighty-four".