128822651 has 8 divisors (see below), whose sum is σ = 136501200. Its totient is φ = 121155328.

The previous prime is 128822647. The next prime is 128822653. The reversal of 128822651 is 156228821.

It is a happy number.

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

It is not a de Polignac number, because 128822651 - 2² = 128822647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128822653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37400 + ... + 40698.

It is an arithmetic number, because the mean of its divisors is an integer number (17062650).

Almost surely, 2^128822651 is an apocalyptic number.

128822651 is a deficient number, since it is larger than the sum of its proper divisors (7678549).

128822651 is a wasteful number, since it uses less digits than its factorization.

128822651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5613.

The product of its digits is 15360, while the sum is 35.

The square root of 128822651 is about 11350.0066519804. The cubic root of 128822651 is about 505.0457769829.

The spelling of 128822651 in words is "one hundred twenty-eight million, eight hundred twenty-two thousand, six hundred fifty-one".