731239488 has 196 divisors, whose sum is σ = 2487493120. Its totient is φ = 208832256.

The previous prime is 731239459. The next prime is 731239507. The reversal of 731239488 is 884932137.

It is a super-5 number, since 5×731239488⁵ (a number of 46 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 325473 + ... + 327711.

Almost surely, 2^731239488 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 731239488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1243746560).

731239488 is an abundant number, since it is smaller than the sum of its proper divisors (1756253632).

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

731239488 is an equidigital number, since it uses as much as digits as its factorization.

731239488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2276 (or 2251 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 731239488 is about 27041.4401983326. The cubic root of 731239488 is about 900.9206578889.

The spelling of 731239488 in words is "seven hundred thirty-one million, two hundred thirty-nine thousand, four hundred eighty-eight".