396617128 has 8 divisors (see below), whose sum is σ = 743657130. Its totient is φ = 198308560.

The previous prime is 396617113. The next prime is 396617227. The reversal of 396617128 is 821716693.

It can be written as a sum of positive squares in only one way, i.e., 261080964 + 135536164 = 16158^2 + 11642^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24788563 + ... + 24788578.

Almost surely, 2^396617128 is an apocalyptic number.

It is an amenable number.

396617128 is a deficient number, since it is larger than the sum of its proper divisors (347040002).

396617128 is a wasteful number, since it uses less digits than its factorization.

396617128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49577147 (or 49577143 counting only the distinct ones).

The product of its digits is 108864, while the sum is 43.

The square root of 396617128 is about 19915.2486301326. The cubic root of 396617128 is about 734.7233154203.

The spelling of 396617128 in words is "three hundred ninety-six million, six hundred seventeen thousand, one hundred twenty-eight".