723255078 has 64 divisors (see below), whose sum is σ = 1784788992. Its totient is φ = 190270080.

The previous prime is 723255077. The next prime is 723255103. The reversal of 723255078 is 870552327.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723255073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 251368 + ... + 254228.

It is an arithmetic number, because the mean of its divisors is an integer number (27887328).

Almost surely, 2^723255078 is an apocalyptic number.

723255078 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 723255078, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (892394496).

723255078 is an abundant number, since it is smaller than the sum of its proper divisors (1061533914).

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

723255078 is a wasteful number, since it uses less digits than its factorization.

723255078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3349.

The product of its (nonzero) digits is 117600, while the sum is 39.

The square root of 723255078 is about 26893.4021276595. The cubic root of 723255078 is about 897.6295969259.

The spelling of 723255078 in words is "seven hundred twenty-three million, two hundred fifty-five thousand, seventy-eight".