128477627 has 4 divisors (see below), whose sum is σ = 132907920. Its totient is φ = 124047336.

The previous prime is 128477617. The next prime is 128477647. The reversal of 128477627 is 726774821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 726774821 = 467 ⋅1556263.

It is a cyclic number.

It is not a de Polignac number, because 128477627 - 2⁴ = 128477611 is a prime.

It is a super-2 number, since 2×128477627² = 33013001279102258, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (128477617) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2215103 + ... + 2215160.

It is an arithmetic number, because the mean of its divisors is an integer number (33226980).

Almost surely, 2^128477627 is an apocalyptic number.

128477627 is a deficient number, since it is larger than the sum of its proper divisors (4430293).

128477627 is an equidigital number, since it uses as much as digits as its factorization.

128477627 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4430292.

The product of its digits is 263424, while the sum is 44.

The square root of 128477627 is about 11334.7971750711. The cubic root of 128477627 is about 504.5944880439.

The spelling of 128477627 in words is "one hundred twenty-eight million, four hundred seventy-seven thousand, six hundred twenty-seven".