731132064 has 72 divisors (see below), whose sum is σ = 2239103412. Its totient is φ = 224962560.

The previous prime is 731132041. The next prime is 731132069. The reversal of 731132064 is 460231137.

It can be written as a sum of positive squares in 2 ways, for example, as 723179664 + 7952400 = 26892^2 + 2820^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is not an unprimeable number, because it can be changed into a prime (731132069) 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 11 ways as a sum of consecutive naturals, for example, 93897 + ... + 101384.

Almost surely, 2^731132064 is an apocalyptic number.

It is an amenable number.

731132064 is an abundant number, since it is smaller than the sum of its proper divisors (1507971348).

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

731132064 is a wasteful number, since it uses less digits than its factorization.

731132064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 195310 (or 195299 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 731132064 is about 27039.4538406381. The cubic root of 731132064 is about 900.8765386266.

The spelling of 731132064 in words is "seven hundred thirty-one million, one hundred thirty-two thousand, sixty-four".