731887680 has 112 divisors (see below), whose sum is σ = 2398800384. Its totient is φ = 188866560.

The previous prime is 731887631. The next prime is 731887697. The reversal of 731887680 is 86788137.

731887680 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×731887680³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17464 + ... + 42056.

Almost surely, 2^731887680 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 731887680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199400192).

731887680 is an abundant number, since it is smaller than the sum of its proper divisors (1666912704).

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

731887680 is a wasteful number, since it uses less digits than its factorization.

731887680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24644 (or 24634 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 48.

The square root of 731887680 is about 27053.4227039759. The cubic root of 731887680 is about 901.1867800502.

The spelling of 731887680 in words is "seven hundred thirty-one million, eight hundred eighty-seven thousand, six hundred eighty".