731916 has 42 divisors (see below), whose sum is σ = 1928052. Its totient is φ = 243000.

The previous prime is 731911. The next prime is 731921. The reversal of 731916 is 619137.

It is an interprime number because it is at equal distance from previous prime (731911) and next prime (731921).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 731916.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 731916.

It is not an unprimeable number, because it can be changed into a prime (731911) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 2791 + ... + 3041.

It is an arithmetic number, because the mean of its divisors is an integer number (45906).

2⁷³¹⁹¹⁶ 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 731916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964026).

731916 is an abundant number, since it is smaller than the sum of its proper divisors (1196136).

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

731916 is a wasteful number, since it uses less digits than its factorization.

731916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273 (or 256 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 731916 is about 855.5208939588. The cubic root of 731916 is about 90.1198403546.

The spelling of 731916 in words is "seven hundred thirty-one thousand, nine hundred sixteen".