723053520 has 640 divisors, whose sum is σ = 3149798400. Its totient is φ = 148635648.

The previous prime is 723053509. The next prime is 723053561. The reversal of 723053520 is 25350327.

723053520 is a `hidden beast` number, since 7 + 2 + 305 + 352 + 0 = 666.

723053520 is digitally balanced in base 2, because in such base 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 (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 7454112 + ... + 7454208.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^723053520 is an apocalyptic number.

723053520 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 723053520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1574899200).

723053520 is an abundant number, since it is smaller than the sum of its proper divisors (2426744880).

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

723053520 is a wasteful number, since it uses less digits than its factorization.

723053520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 27.

The square root of 723053520 is about 26889.6545161889. The cubic root of 723053520 is about 897.5462048460.

The spelling of 723053520 in words is "seven hundred twenty-three million, fifty-three thousand, five hundred twenty".