723406212 has 72 divisors (see below), whose sum is σ = 1928000256. Its totient is φ = 228248064.

The previous prime is 723406163. The next prime is 723406213. The reversal of 723406212 is 212604327.

723406212 is a `hidden beast` number, since 7 + 2 + 34 + 0 + 621 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (723406213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75813 + ... + 84819.

Almost surely, 2^723406212 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 723406212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (964000128).

723406212 is an abundant number, since it is smaller than the sum of its proper divisors (1204594044).

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

723406212 is a wasteful number, since it uses less digits than its factorization.

723406212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9137 (or 9132 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 723406212 is about 26896.2118522293. The cubic root of 723406212 is about 897.6921165483.

The spelling of 723406212 in words is "seven hundred twenty-three million, four hundred six thousand, two hundred twelve".