731381760 has 240 divisors, whose sum is σ = 2617243200. Its totient is φ = 188743680.

The previous prime is 731381753. The next prime is 731381767. The reversal of 731381760 is 67183137.

It is an interprime number because it is at equal distance from previous prime (731381753) and next prime (731381767).

It is a tau number, because it is divible by the number of its divisors (240).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731381767) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23592945 + ... + 23592975.

It is an arithmetic number, because the mean of its divisors is an integer number (10905180).

Almost surely, 2^731381760 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 731381760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1308621600).

731381760 is an abundant number, since it is smaller than the sum of its proper divisors (1885861440).

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

731381760 is an frugal number, since it uses more digits than its factorization.

731381760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80 (or 41 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 36.

The square root of 731381760 is about 27044.0706995082. The cubic root of 731381760 is about 900.9790826477.

The spelling of 731381760 in words is "seven hundred thirty-one million, three hundred eighty-one thousand, seven hundred sixty".