723628728000 has 784 divisors, whose sum is σ = 2710798930944. Its totient is φ = 191252275200.

The previous prime is 723628727999. The next prime is 723628728023. The reversal of 723628728000 is 827826327.

723628728000 is a `hidden beast` number, since 7 + 2 + 362 + 8 + 7 + 280 + 0 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 740663512 + ... + 740664488.

Almost surely, 2^723628728000 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 723628728000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1355399465472).

723628728000 is an abundant number, since it is smaller than the sum of its proper divisors (1987170202944).

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

723628728000 is an equidigital number, since it uses as much as digits as its factorization.

723628728000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149 (or 1114 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 723628728000 in words is "seven hundred twenty-three billion, six hundred twenty-eight million, seven hundred twenty-eight thousand".