128833651 has 4 divisors (see below), whose sum is σ = 128945592. Its totient is φ = 128721712.

The previous prime is 128833609. The next prime is 128833657. The reversal of 128833651 is 156338821.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 128833651 - 2⁹ = 128833139 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 128833651.

It is not an unprimeable number, because it can be changed into a prime (128833657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54226 + ... + 56551.

It is an arithmetic number, because the mean of its divisors is an integer number (32236398).

Almost surely, 2^128833651 is an apocalyptic number.

128833651 is a deficient number, since it is larger than the sum of its proper divisors (111941).

128833651 is a wasteful number, since it uses less digits than its factorization.

128833651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111940.

The product of its digits is 34560, while the sum is 37.

The square root of 128833651 is about 11350.4912228502. The cubic root of 128833651 is about 505.0601516429.

The spelling of 128833651 in words is "one hundred twenty-eight million, eight hundred thirty-three thousand, six hundred fifty-one".