128513833 has 8 divisors (see below), whose sum is σ = 147051968. Its totient is φ = 110020464.

The previous prime is 128513831. The next prime is 128513837. The reversal of 128513833 is 338315821.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 128513833 - 2¹ = 128513831 is a prime.

It is not an unprimeable number, because it can be changed into a prime (128513831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4791 + ... + 16732.

It is an arithmetic number, because the mean of its divisors is an integer number (18381496).

Almost surely, 2^128513833 is an apocalyptic number.

It is an amenable number.

128513833 is a deficient number, since it is larger than the sum of its proper divisors (18538135).

128513833 is an equidigital number, since it uses as much as digits as its factorization.

128513833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22383.

The product of its digits is 17280, while the sum is 34.

The square root of 128513833 is about 11336.3941798087. The cubic root of 128513833 is about 504.6418831496.

The spelling of 128513833 in words is "one hundred twenty-eight million, five hundred thirteen thousand, eight hundred thirty-three".