723217632 has 48 divisors (see below), whose sum is σ = 1900547712. Its totient is φ = 240805760.

The previous prime is 723217619. The next prime is 723217633. The reversal of 723217632 is 236712327.

723217632 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (48).

It is a junction number, because it is equal to n+sod(n) for n = 723217593 and 723217602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723217633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 95323 + ... + 102629.

It is an arithmetic number, because the mean of its divisors is an integer number (39594744).

Almost surely, 2^723217632 is an apocalyptic number.

It is an amenable number.

723217632 is an abundant number, since it is smaller than the sum of its proper divisors (1177330080).

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

723217632 is a wasteful number, since it uses less digits than its factorization.

723217632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8351 (or 8343 counting only the distinct ones).

The product of its digits is 21168, while the sum is 33.

The square root of 723217632 is about 26892.7059255851. The cubic root of 723217632 is about 897.6141052877.

Adding to 723217632 its reverse (236712327), we get a palindrome (959929959).

The spelling of 723217632 in words is "seven hundred twenty-three million, two hundred seventeen thousand, six hundred thirty-two".