398627648 has 28 divisors (see below), whose sum is σ = 791938980. Its totient is φ = 199084032.

The previous prime is 398627627. The next prime is 398627683. The reversal of 398627648 is 846726893.

It can be written as a sum of positive squares in 2 ways, for example, as 43983424 + 354644224 = 6632^2 + 18832^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 398627648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61490 + ... + 67662.

It is an arithmetic number, because the mean of its divisors is an integer number (28283535).

Almost surely, 2^398627648 is an apocalyptic number.

It is an amenable number.

398627648 is a deficient number, since it is larger than the sum of its proper divisors (393311332).

398627648 is a wasteful number, since it uses less digits than its factorization.

398627648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7194 (or 7184 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 53.

The square root of 398627648 is about 19965.6617220667. The cubic root of 398627648 is about 735.9627028989.

The spelling of 398627648 in words is "three hundred ninety-eight million, six hundred twenty-seven thousand, six hundred forty-eight".