731424456 has 192 divisors, whose sum is σ = 2523830400. Its totient is φ = 186292224.

The previous prime is 731424413. The next prime is 731424467. The reversal of 731424456 is 654424137.

731424456 is a `hidden beast` number, since 73 + 142 + 445 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 731424456.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 160546 + ... + 165038.

It is an arithmetic number, because the mean of its divisors is an integer number (13144950).

Almost surely, 2^731424456 is an apocalyptic number.

731424456 is a gapful number since it is divisible by the number (76) 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 731424456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1261915200).

731424456 is an abundant number, since it is smaller than the sum of its proper divisors (1792405944).

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

731424456 is a wasteful number, since it uses less digits than its factorization.

731424456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4548 (or 4541 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 731424456 is about 27044.8600661937. The cubic root of 731424456 is about 900.9966145106.

The spelling of 731424456 in words is "seven hundred thirty-one million, four hundred twenty-four thousand, four hundred fifty-six".