396000128 has 32 divisors (see below), whose sum is σ = 830433000. Its totient is φ = 187577856.

The previous prime is 396000119. The next prime is 396000139. The reversal of 396000128 is 821000693.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-2 number, since 2×396000128² = 313632202752032768, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 396000128.

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, 78983 + ... + 83846.

Almost surely, 2^396000128 is an apocalyptic number.

396000128 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

396000128 is an abundant number, since it is smaller than the sum of its proper divisors (434432872).

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

396000128 is a wasteful number, since it uses less digits than its factorization.

396000128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162862 (or 162850 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 396000128 is about 19899.7519582531. The cubic root of 396000128 is about 734.3421253260.

The spelling of 396000128 in words is "three hundred ninety-six million, one hundred twenty-eight", and thus it is an aban number.