723450000 has 480 divisors, whose sum is σ = 2929312512. Its totient is φ = 149760000.

The previous prime is 723449999. The next prime is 723450019. The reversal of 723450000 is 54327.

It is a happy number.

723450000 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 13649974 + ... + 13650026.

Almost surely, 2^723450000 is an apocalyptic number.

723450000 is a gapful number since it is divisible by the number (70) 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 723450000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1464656256).

723450000 is an abundant number, since it is smaller than the sum of its proper divisors (2205862512).

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

723450000 is a wasteful number, since it uses less digits than its factorization.

723450000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 109 (or 83 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 21.

The square root of 723450000 is about 26897.0258578899. The cubic root of 723450000 is about 897.7102287092.

The spelling of 723450000 in words is "seven hundred twenty-three million, four hundred fifty thousand".