723140 has 48 divisors (see below), whose sum is σ = 1753920. Its totient is φ = 247680.

The previous prime is 723133. The next prime is 723157. The reversal of 723140 is 41327.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 4094 + ... + 4266.

It is an arithmetic number, because the mean of its divisors is an integer number (36540).

2⁷²³¹⁴⁰ 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 723140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (876960).

723140 is an abundant number, since it is smaller than the sum of its proper divisors (1030780).

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

723140 is a wasteful number, since it uses less digits than its factorization.

723140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 17.

The square root of 723140 is about 850.3763872545. The cubic root of 723140 is about 89.7581986753.

Adding to 723140 its reverse (41327), we get a palindrome (764467).

The spelling of 723140 in words is "seven hundred twenty-three thousand, one hundred forty", and thus it is an iban number.