63898128 has 60 divisors (see below), whose sum is σ = 204375808. Its totient is φ = 18256320.

The previous prime is 63898111. The next prime is 63898139. The reversal of 63898128 is 82189836.

63898128 is a `hidden beast` number, since 638 + 9 + 8 + 1 + 2 + 8 = 666.

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30688 + ... + 32703.

Almost surely, 2^63898128 is an apocalyptic number.

It is an amenable number.

63898128 is an abundant number, since it is smaller than the sum of its proper divisors (140477680).

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

63898128 is a wasteful number, since it uses less digits than its factorization.

63898128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63412 (or 63403 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 63898128 is about 7993.6304643134. The cubic root of 63898128 is about 399.7876539595.

Adding to 63898128 its product of digits (165888), we get a square (64064016 = 8004²).

The spelling of 63898128 in words is "sixty-three million, eight hundred ninety-eight thousand, one hundred twenty-eight".