1209848256 has 168 divisors, whose sum is σ = 3673937280. Its totient is φ = 379593216.

The previous prime is 1209848249. The next prime is 1209848257. The reversal of 1209848256 is 6528489021.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1209848257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2484045 + ... + 2484531.

Almost surely, 2^1209848256 is an apocalyptic number.

1209848256 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 1209848256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1836968640).

1209848256 is an abundant number, since it is smaller than the sum of its proper divisors (2464089024).

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

1209848256 is a wasteful number, since it uses less digits than its factorization.

1209848256 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 751 (or 738 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 1209848256 is about 34782.8730268217. The cubic root of 1209848256 is about 1065.5576897953.

The spelling of 1209848256 in words is "one billion, two hundred nine million, eight hundred forty-eight thousand, two hundred fifty-six".