731316672 has 168 divisors, whose sum is σ = 2171791440. Its totient is φ = 235130880.

The previous prime is 731316661. The next prime is 731316697. The reversal of 731316672 is 276613137.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4085479 + ... + 4085657.

It is an arithmetic number, because the mean of its divisors is an integer number (12927330).

Almost surely, 2^731316672 is an apocalyptic number.

731316672 is a gapful number since it is divisible by the number (72) 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 731316672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1085895720).

731316672 is an abundant number, since it is smaller than the sum of its proper divisors (1440474768).

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

731316672 is a wasteful number, since it uses less digits than its factorization.

731316672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 411 (or 398 counting only the distinct ones).

The product of its digits is 31752, while the sum is 36.

The square root of 731316672 is about 27042.8673035978. The cubic root of 731316672 is about 900.9523548522.

The spelling of 731316672 in words is "seven hundred thirty-one million, three hundred sixteen thousand, six hundred seventy-two".