128252417547228 has 96 divisors (see below), whose sum is σ = 332695974051840. Its totient is φ = 38186471070720.

The previous prime is 128252417547217. The next prime is 128252417547253. The reversal of 128252417547228 is 822745714252821.

It is a super-2 number, since 2×128252417547228² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 64632628 + ... + 66587396.

It is an arithmetic number, because the mean of its divisors is an integer number (3465583063040).

Almost surely, 2^{128252417547228} is an apocalyptic number.

It is an amenable number.

128252417547228 is an abundant number, since it is smaller than the sum of its proper divisors (204443556504612).

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

128252417547228 is a wasteful number, since it uses less digits than its factorization.

128252417547228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1968387 (or 1968385 counting only the distinct ones).

The product of its digits is 40140800, while the sum is 60.

The spelling of 128252417547228 in words is "one hundred twenty-eight trillion, two hundred fifty-two billion, four hundred seventeen million, five hundred forty-seven thousand, two hundred twenty-eight".