128533608 has 64 divisors (see below), whose sum is σ = 408048000. Its totient is φ = 36723456.

The previous prime is 128533607. The next prime is 128533609. The reversal of 128533608 is 806335821.

128533608 is a `hidden beast` number, since 12 + 8 + 5 + 33 + 608 = 666.

It is an interprime number because it is at equal distance from previous prime (128533607) and next prime (128533609).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (128533607) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40993 + ... + 44016.

It is an arithmetic number, because the mean of its divisors is an integer number (6375750).

Almost surely, 2^128533608 is an apocalyptic number.

128533608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

128533608 is an abundant number, since it is smaller than the sum of its proper divisors (279514392).

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

128533608 is a wasteful number, since it uses less digits than its factorization.

128533608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85031 (or 85021 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 128533608 is about 11337.2663371732. The cubic root of 128533608 is about 504.6677656589.

It can be divided in two parts, 12853 and 3608, that added together give a palindrome (16461).

The spelling of 128533608 in words is "one hundred twenty-eight million, five hundred thirty-three thousand, six hundred eight".