396758089728 has 1056 divisors, whose sum is σ = 1606585821120. Its totient is φ = 95126814720.

The previous prime is 396758089709. The next prime is 396758089751. The reversal of 396758089728 is 827980857693.

396758089728 is a `hidden beast` number, since 39 + 6 + 7 + 580 + 8 + 9 + 7 + 2 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (1056).

It is a super-2 number, since 2×396758089728² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30519853050 + ... + 30519853062.

Almost surely, 2^396758089728 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 396758089728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (803292910560).

396758089728 is an abundant number, since it is smaller than the sum of its proper divisors (1209827731392).

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

396758089728 is an frugal number, since it uses more digits than its factorization.

396758089728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 365783040, while the sum is 72.

The spelling of 396758089728 in words is "three hundred ninety-six billion, seven hundred fifty-eight million, eighty-nine thousand, seven hundred twenty-eight".