128418833 has 16 divisors (see below), whose sum is σ = 142493184. Its totient is φ = 115188480.

The previous prime is 128418827. The next prime is 128418839. The reversal of 128418833 is 338814821.

It is an interprime number because it is at equal distance from previous prime (128418827) and next prime (128418839).

It is a cyclic number.

It is not a de Polignac number, because 128418833 - 2⁴ = 128418817 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128418839) 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, 33491 + ... + 37127.

It is an arithmetic number, because the mean of its divisors is an integer number (8905824).

Almost surely, 2^128418833 is an apocalyptic number.

It is an amenable number.

128418833 is a deficient number, since it is larger than the sum of its proper divisors (14074351).

128418833 is a wasteful number, since it uses less digits than its factorization.

128418833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3752.

The product of its digits is 36864, while the sum is 38.

The square root of 128418833 is about 11332.2033603355. The cubic root of 128418833 is about 504.5175053671.

The spelling of 128418833 in words is "one hundred twenty-eight million, four hundred eighteen thousand, eight hundred thirty-three".