128972627 has 8 divisors (see below), whose sum is σ = 155155200. Its totient is φ = 104729544.

The previous prime is 128972611. The next prime is 128972629. The reversal of 128972627 is 726279821.

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 128972627 - 2⁴ = 128972611 is a prime.

It is a super-2 number, since 2×128972627² = 33267877030562258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128972629) 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, 484727 + ... + 484992.

It is an arithmetic number, because the mean of its divisors is an integer number (19394400).

Almost surely, 2^128972627 is an apocalyptic number.

128972627 is a deficient number, since it is larger than the sum of its proper divisors (26182573).

128972627 is an equidigital number, since it uses as much as digits as its factorization.

128972627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 969745.

The product of its digits is 169344, while the sum is 44.

The square root of 128972627 is about 11356.6115985359. The cubic root of 128972627 is about 505.2416932800.

The spelling of 128972627 in words is "one hundred twenty-eight million, nine hundred seventy-two thousand, six hundred twenty-seven".