99856128 has 36 divisors (see below), whose sum is σ = 265764968. Its totient is φ = 33285120.

The previous prime is 99856121. The next prime is 99856151. The reversal of 99856128 is 82165899.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99856121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64243 + ... + 65778.

Almost surely, 2^99856128 is an apocalyptic number.

It is an amenable number.

99856128 is an abundant number, since it is smaller than the sum of its proper divisors (165908840).

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

99856128 is a wasteful number, since it uses less digits than its factorization.

99856128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130040 (or 130026 counting only the distinct ones).

The product of its digits is 311040, while the sum is 48.

The square root of 99856128 is about 9992.8038107430. The cubic root of 99856128 is about 463.9361783008.

The spelling of 99856128 in words is "ninety-nine million, eight hundred fifty-six thousand, one hundred twenty-eight".