731283456 has 128 divisors (see below), whose sum is σ = 2006943840. Its totient is φ = 236716032.

The previous prime is 731283439. The next prime is 731283461. The reversal of 731283456 is 654382137.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4226986 + ... + 4227158.

Almost surely, 2^731283456 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 731283456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1003471920).

731283456 is an abundant number, since it is smaller than the sum of its proper divisors (1275660384).

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

731283456 is an equidigital number, since it uses as much as digits as its factorization.

731283456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249 (or 221 counting only the distinct ones).

The product of its digits is 120960, while the sum is 39.

The square root of 731283456 is about 27042.2531605634. The cubic root of 731283456 is about 900.9387143926.

The spelling of 731283456 in words is "seven hundred thirty-one million, two hundred eighty-three thousand, four hundred fifty-six".