396725648 has 40 divisors (see below), whose sum is σ = 845184000. Its totient is φ = 178899840.

The previous prime is 396725647. The next prime is 396725653. The reversal of 396725648 is 846527693.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 396725596 and 396725605.

It is not an unprimeable number, because it can be changed into a prime (396725647) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13478 + ... + 31226.

It is an arithmetic number, because the mean of its divisors is an integer number (21129600).

Almost surely, 2^396725648 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 396725648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (422592000).

396725648 is an abundant number, since it is smaller than the sum of its proper divisors (448458352).

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

396725648 is a wasteful number, since it uses less digits than its factorization.

396725648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17895 (or 17889 counting only the distinct ones).

The product of its digits is 2177280, while the sum is 50.

The square root of 396725648 is about 19917.9729892376. The cubic root of 396725648 is about 734.7903195054.

The spelling of 396725648 in words is "three hundred ninety-six million, seven hundred twenty-five thousand, six hundred forty-eight".